LibJS: Generate bytecode for throw statements

Author: https://github.com/gunnarbeutner
Commit: b78f1c1261
Pull-request: https://github.com/SerenityOS/serenity/pull/7952
Reviewed-by: https://github.com/alimpfard

Userland/Libraries/LibJS/Bytecode/Instruction.h

@@ -56,7 +56,8 @@
     O(InstanceOf)                 \
     O(ConcatString)               \
     O(Increment)                  \
-    O(Decrement)
+    O(Decrement)                  \
+    O(Throw)
 
 namespace JS::Bytecode {