W-19459009: Sync OSS templates

[iowillhoit]

Part of @W-19459009@

[iowillhoit]

We were getting typescripts errors for the enums:

 Exception during run: ~/dev/kit/test/env.test.ts:93
      it('should get a default for an undefined envar from an enum, with a transform', () => {
  >     enum Mode {
          TEST = 'test',
          DEMO = 'demo',
  >     }
        const value = env.getKeyOf('ENUM2', Mode, Mode.DEMO, (v) => v.toUpperCase());

SyntaxError: TypeScript enum is not supported in strip-only mode