Refactor yield await classification (#12230)

* fix: incomplete ParamKind declaration

* refactor: add expression scope handler

* test: update test262 allowlist

* chore: cleanup

* fix: push expression scope for function body

* fix: push new expression scope for initializer and static block

* test: add more test cases

* fix flow error

* refactor: remove unecessary expression scope

* fix: parameter initializer error should not cross expression scope boundary

* chore: cleanup outdated comments

* fix: do not record async arrow error on ParameterDeclaration

* Update packages/babel-parser/src/util/expression-scope.js

Co-authored-by: Nicolò Ribaudo <nicolo.ribaudo@gmail.com>

* polish: clear ancestry declaration error on validate

Co-authored-by: Nicolò Ribaudo <nicolo.ribaudo@gmail.com>

packages/babel-parser/src/tokenizer/state.js

@@ -57,13 +57,7 @@ export default class State {
   noArrowParamsConversionAt: number[] = [];
 
   // Flags to track
-  inParameters: boolean = false;
   maybeInArrowParameters: boolean = false;
-  // This flag is used to track async arrow head across function declarations.
-  // e.g. async (foo = function (await) {}) => {}
-  // When parsing `await` in this expression, `maybeInAsyncArrowHead` is true
-  // but `maybeInArrowParameters` is false
-  maybeInAsyncArrowHead: boolean = false;
   inPipeline: boolean = false;
   inType: boolean = false;
   noAnonFunctionType: boolean = false;
@@ -94,10 +88,6 @@ export default class State {
   // where @foo belongs to the outer class and @bar to the inner
   decoratorStack: Array<Array<N.Decorator>> = [[]];
 
-  // Positions to delayed-check that yield/await does not exist in default parameters.
-  yieldPos: number = -1;
-  awaitPos: number = -1;
-
   // Comment store.
   comments: Array<N.Comment> = [];