[SSR v2] Restrict invalid decorator usage

[wjhsf]

In the regular compiler, we disallow various forms of invalid decorator usage. The following validation should be added to the SSR compiler:

1. Only api, track, and wire can be used as decorators.
   • @foo prop is invalid.
2. The decorators cannot be imported and renamed.
   • import { api as API } from "lwc" is invalid.
3. Other functions called api, wire, or track cannot be used as decorators.
   • const api = () => {}; ... @api prop is invalid.
4. The decorators cannot be called as regular functions.
   • import { api } from "lwc"; ... api() is invalid.
5. Other functions called api, wire, or track can be used as regular functions.
   • const api = () => {}; api(); is valid.

[git2gus]

This issue has been linked to a new work item: W-17264833