LibWeb: Add CSS view-transition-name

Author: https://github.com/Psychpsyo
Commit: c0eb072645
Pull-request: https://github.com/LadybirdBrowser/ladybird/pull/3605
Reviewed-by: https://github.com/AtkinsSJ ✅

Tests/LibWeb/Text/expected/css/CSSStyleDeclaration-all-supported-properties-and-default-values.txt

@@ -1,6 +1,6 @@
 All supported properties and their default values exposed from CSSStyleDeclaration from getComputedStyle:
 'cssText': ''
-'length': '219'
+'length': '220'
 'parentRule': 'null'
 'cssFloat': 'none'
 'WebkitAlignContent': 'normal'
@@ -589,6 +589,8 @@ All supported properties and their default values exposed from CSSStyleDeclarati
 'user-select': 'auto'
 'verticalAlign': 'baseline'
 'vertical-align': 'baseline'
+'viewTransitionName': 'none'
+'view-transition-name': 'none'
 'visibility': 'visible'
 'whiteSpace': 'normal'
 'white-space': 'normal'