Add missing generators flags

...ments/class/scope-static-gen-meth-paramsbody-var-close.js

...ements/class/scope-static-gen-meth-paramsbody-var-open.js

...s/class/subclass/class-definition-superclass-generator.js

...ss-body-special-method-generator-contains-direct-super.js

...ass-body-special-method-generator-propname-constructor.js

test/language/statements/do-while/decl-gen.js

test/language/statements/for-in/decl-gen.js

test/language/statements/for-of/decl-gen.js

test/language/statements/for-of/nested.js

test/language/statements/for/decl-gen.js

test/language/statements/if/if-gen-else-gen.js

test/language/statements/if/if-gen-else-stmt.js

test/language/statements/if/if-gen-no-else.js

test/language/statements/if/if-stmt-else-gen.js

test/language/statements/labeled/decl-gen.js

...nts/let/syntax/let-newline-yield-in-generator-function.js

test/language/statements/while/decl-gen.js

test/language/statements/with/decl-gen.js