Update function forms templates to reflect the params name when appropriate only

src/function-forms/default/arrow-function.template

src/function-forms/default/async-gen-func-decl.template

src/function-forms/default/async-gen-func-expr.template

src/function-forms/default/async-gen-meth.template

...function-forms/default/async-gen-named-func-expr.template

...ion-forms/default/cls-decl-async-gen-meth-static.template

src/function-forms/default/cls-decl-async-gen-meth.template

src/function-forms/default/cls-decl-gen-meth-static.template

src/function-forms/default/cls-decl-gen-meth.template

src/function-forms/default/cls-decl-meth-static.template

src/function-forms/default/cls-decl-meth.template

...ion-forms/default/cls-expr-async-gen-meth-static.template

src/function-forms/default/cls-expr-async-gen-meth.template

src/function-forms/default/cls-expr-gen-meth-static.template

src/function-forms/default/cls-expr-gen-meth.template

src/function-forms/default/cls-expr-meth-static.template

src/function-forms/default/cls-expr-meth.template

src/function-forms/default/func-decl.template

src/function-forms/default/func-expr.template

src/function-forms/default/gen-func-decl.template