Add tests for additional generator function forms

test/language/class/method-definition/generator-no-yield.js

test/language/class/method-definition/generator-return.js

...ge/class/method-definition/yield-as-binding-identifier.js

...e/class/method-definition/yield-as-expression-with-rhs.js

...lass/method-definition/yield-as-expression-without-rhs.js

...nition/yield-as-function-expression-binding-identifier.js

...efinition/yield-as-generator-method-binding-identifier.js

...thod-definition/yield-as-identifier-in-nested-function.js

test/language/class/method-definition/yield-as-label.js

...class/method-definition/yield-as-literal-property-name.js

...class/method-definition/yield-as-logical-or-expression.js

test/language/class/method-definition/yield-as-parameter.js

...anguage/class/method-definition/yield-as-property-name.js

test/language/class/method-definition/yield-as-statement.js

...anguage/class/method-definition/yield-as-yield-operand.js

test/language/class/method-definition/yield-newline.js

...guage/class/method-definition/yield-star-after-newline.js

...uage/class/method-definition/yield-star-before-newline.js

test/language/class/method-definition/yield-weak-binding.js

test/language/expressions/generators/no-yield.js