Update class fields tags in non-generated test files

...nguage/expressions/class/fields-duplicate-privatenames.js

...e/expressions/class/fields-privatename-constructor-err.js

...ge/module-code/privatename-not-valid-earlyerr-module-1.js

...ge/module-code/privatename-not-valid-earlyerr-module-2.js

...ge/module-code/privatename-not-valid-earlyerr-module-3.js

...ge/module-code/privatename-not-valid-earlyerr-module-4.js

...ge/module-code/privatename-not-valid-earlyerr-module-5.js

...ge/module-code/privatename-not-valid-earlyerr-module-6.js

...ge/module-code/privatename-not-valid-earlyerr-module-7.js

...ge/module-code/privatename-not-valid-earlyerr-module-8.js

test/language/module-code/privatename-valid-no-earlyerr.js

...anguage/statements/class/fields-duplicate-privatenames.js

...ge/statements/class/fields-privatename-constructor-err.js

test/language/statements/class/privatefieldadd-typeerror.js

test/language/statements/class/privatefieldget-success-1.js

test/language/statements/class/privatefieldget-success-2.js

test/language/statements/class/privatefieldget-success-3.js

test/language/statements/class/privatefieldget-success-4.js

test/language/statements/class/privatefieldget-success-5.js

.../language/statements/class/privatefieldget-typeerror-1.js