LibWeb/CSS: Correct definition of CSSNumericType

What I thought was a spec issue was actually a combination of my own
misunderstanding and a bug in our IDL generator. With that bug fixed, I
can correct this to how it is in the spec.

Libraries/LibWeb/CSS/CSSNumericValue.h

@@ -15,14 +15,14 @@
 namespace Web::CSS {
 
 struct CSSNumericType {
-    WebIDL::Long length {};
-    WebIDL::Long angle {};
-    WebIDL::Long time {};
-    WebIDL::Long frequency {};
-    WebIDL::Long resolution {};
-    WebIDL::Long flex {};
-    WebIDL::Long percent {};
-    Optional<Bindings::CSSNumericBaseType> percent_hint {};
+    Optional<WebIDL::Long> length;
+    Optional<WebIDL::Long> angle;
+    Optional<WebIDL::Long> time;
+    Optional<WebIDL::Long> frequency;
+    Optional<WebIDL::Long> resolution;
+    Optional<WebIDL::Long> flex;
+    Optional<WebIDL::Long> percent;
+    Optional<Bindings::CSSNumericBaseType> percent_hint;
 };
 
 // https://drafts.css-houdini.org/css-typed-om-1/#cssnumericvalue

Libraries/LibWeb/CSS/CSSNumericValue.idl

@@ -12,16 +12,15 @@ enum CSSNumericBaseType {
 };
 
 // https://drafts.css-houdini.org/css-typed-om-1/#dictdef-cssnumerictype
-// AD-HOC: We give these default values and mark percentHint as nullable. https://github.com/w3c/css-houdini-drafts/issues/1149
 dictionary CSSNumericType {
-    long length = 0;
-    long angle = 0;
-    long time = 0;
-    long frequency = 0;
-    long resolution = 0;
-    long flex = 0;
-    long percent = 0;
-    CSSNumericBaseType? percentHint;
+    long length;
+    long angle;
+    long time;
+    long frequency;
+    long resolution;
+    long flex;
+    long percent;
+    CSSNumericBaseType percentHint;
 };
 
 // https://drafts.css-houdini.org/css-typed-om-1/#cssnumericvalue

Tests/LibWeb/Text/expected/wpt-import/css/css-typed-om/stylevalue-subclasses/numeric-objects/add-two-types.tentative.txt

@@ -2,12 +2,11 @@ Harness status: OK
 
 Found 7 tests
 
-2 Pass
-5 Fail
+7 Pass
 Pass	Adding two types with different non-null percent hints throws TypeError
-Fail	Adding two types with the same nonzero values returns same type
-Fail	Adding two types with empty maps with returns empty map
-Fail	Adding a type with percent returns type with percent hint
+Pass	Adding two types with the same nonzero values returns same type
+Pass	Adding two types with empty maps with returns empty map
+Pass	Adding a type with percent returns type with percent hint
 Pass	Adding a type with percent 2 returns type with percent hint throws TypeError
-Fail	Adding a type with a percent hint returns a type with the percent hint
-Fail	Adding two types with the same percent hint returns a type with the percent hint
+Pass	Adding a type with a percent hint returns a type with the percent hint
+Pass	Adding two types with the same percent hint returns a type with the percent hint

Tests/LibWeb/Text/expected/wpt-import/css/css-typed-om/stylevalue-subclasses/numeric-objects/create-a-type.tentative.txt

@@ -2,12 +2,12 @@ Harness status: OK
 
 Found 8 tests
 
-8 Fail
-Fail	Creating a type from "number" returns {}
-Fail	Creating a type from "percent" returns { percent: 1 }
-Fail	Creating a type from <length> returns { length: 1 }
-Fail	Creating a type from <angle> returns { angle: 1 }
-Fail	Creating a type from <time> returns { time: 1 }
-Fail	Creating a type from <frequency> returns { frequency: 1 }
-Fail	Creating a type from <resolution> returns { resolution: 1 }
-Fail	Creating a type from <flex> returns { flex: 1 }
+8 Pass
+Pass	Creating a type from "number" returns {}
+Pass	Creating a type from "percent" returns { percent: 1 }
+Pass	Creating a type from <length> returns { length: 1 }
+Pass	Creating a type from <angle> returns { angle: 1 }
+Pass	Creating a type from <time> returns { time: 1 }
+Pass	Creating a type from <frequency> returns { frequency: 1 }
+Pass	Creating a type from <resolution> returns { resolution: 1 }
+Pass	Creating a type from <flex> returns { flex: 1 }

Tests/LibWeb/Text/expected/wpt-import/css/css-typed-om/stylevalue-subclasses/numeric-objects/cssMathInvert-type.txt

@@ -2,7 +2,7 @@ Harness status: OK
 
 Found 3 tests
 
-3 Fail
-Fail	Inverting a type with empty map returns the empty map
-Fail	Inverting a type negates all its exponents
-Fail	Inverting an inverted type returns the original type
+3 Pass
+Pass	Inverting a type with empty map returns the empty map
+Pass	Inverting a type negates all its exponents
+Pass	Inverting an inverted type returns the original type

Tests/LibWeb/Text/expected/wpt-import/css/css-typed-om/stylevalue-subclasses/numeric-objects/cssMathNegate-type.txt

@@ -2,6 +2,6 @@ Harness status: OK
 
 Found 2 tests
 
-2 Fail
-Fail	Negating a type with empty map returns the empty map
-Fail	Negating a type returns the same type
+2 Pass
+Pass	Negating a type with empty map returns the empty map
+Pass	Negating a type returns the same type

Tests/LibWeb/Text/expected/wpt-import/css/css-typed-om/stylevalue-subclasses/numeric-objects/cssnumericvalue-multiply-two-types.tentative.txt

@@ -2,12 +2,11 @@ Harness status: OK
 
 Found 7 tests
 
-1 Pass
-6 Fail
+7 Pass
 Pass	Multiplying two types with different non-null percent hints throws TypeError
-Fail	Multiplying two types with same base types adds exponents
-Fail	Multiplying two types with different base types adds exponents
-Fail	Multiplying two types respects the sign of the exponents
-Fail	Multiplying a type with no exponents is a no-op
-Fail	Multiplying a type with percent hint applies the percent hint
-Fail	Multiplying two types with same percent hint applies the percent hint
+Pass	Multiplying two types with same base types adds exponents
+Pass	Multiplying two types with different base types adds exponents
+Pass	Multiplying two types respects the sign of the exponents
+Pass	Multiplying a type with no exponents is a no-op
+Pass	Multiplying a type with percent hint applies the percent hint
+Pass	Multiplying two types with same percent hint applies the percent hint