class fields: added tests for privatename production

...ields/default/cls-decl-after-same-line-async-gen.template

...ds/default/cls-decl-after-same-line-async-method.template

...lass-fields/default/cls-decl-after-same-line-gen.template

...s-fields/default/cls-decl-after-same-line-method.template

...efault/cls-decl-after-same-line-static-async-gen.template

...ult/cls-decl-after-same-line-static-async-method.template

...elds/default/cls-decl-after-same-line-static-gen.template

...s/default/cls-decl-after-same-line-static-method.template

...ass-fields/default/cls-decl-multiple-definitions.template

...ds/default/cls-decl-multiple-stacked-definitions.template

...ss-fields/default/cls-decl-new-no-sc-line-method.template

...ss-fields/default/cls-decl-new-sc-line-generator.template

...class-fields/default/cls-decl-new-sc-line-method.template

...lass-fields/default/cls-decl-regular-definitions.template

...lass-fields/default/cls-decl-same-line-generator.template

src/class-fields/default/cls-decl-same-line-method.template

src/class-fields/default/cls-decl-wrapped-in-sc.template

...ields/default/cls-expr-after-same-line-async-gen.template

...ds/default/cls-expr-after-same-line-async-method.template

...lass-fields/default/cls-expr-after-same-line-gen.template