classfields: add tests for early error delete private field

src/class-fields/call-expression-privatename.case

...ields/delete-error/cls-decl-field-delete-covered.template

...delete-error/cls-decl-field-delete-twice-covered.template

src/class-fields/delete-error/cls-decl-field-delete.template

...elds/delete-error/cls-decl-method-delete-covered.template

...elete-error/cls-decl-method-delete-twice-covered.template

...class-fields/delete-error/cls-decl-method-delete.template

...ields/delete-error/cls-expr-field-delete-covered.template

...delete-error/cls-expr-field-delete-twice-covered.template

src/class-fields/delete-error/cls-expr-field-delete.template

...elds/delete-error/cls-expr-method-delete-covered.template

...elete-error/cls-expr-method-delete-twice-covered.template

...class-fields/delete-error/cls-expr-method-delete.template

src/class-fields/member-expression-privatename.case