Delegate ts class field transformation from strip to class_properties

[Austaras]

Concerning recent issues of #3317 and #3389 which requires [[Define]] for class fields in typescript, here is my proposed steps to fix:

1. fixes bugs in classes fix(ecma/transform/compat): constructor #3505 so we can reuse babel tests
2. add loose mode to classes feat(es/transforms/compat): loose mode for classes #3474
3. fixes bugs in class_properties so we can reuse babel tests fix(ecma/transform/compat): private and new.target in class properties #3594 mod(es): change definition of optional chain #3645 fix(ecma/transform/compat): private properties cannot be initialized twice #3665 fix(ecma/transform/compat): private getter/setter #3695
4. add loose mode to class_properties feat(es/transforms/compat): loose mode for class_properties #3722
5. expose use_define_for_class_field in config.jsc. If this is set to true, automatically set set_public_class_fields to true, feat: unify class properties transform in ts and js #3766

[kdy1]

cc @dsherret @bartlomieju

[Austaras]

This would be a break change for browsers natively support class field, but since tsc doesn't have env and babel does the same, I guess it's fine