fix: fix illegal decorator check (#6723)

* Fix illegal decorator check

* Fix

* Fix scope-manager tests

* Fix member-ordering.test.ts

* Fix no-unused-vars.test.ts

* Fix explicit-member-accessibility.test.ts

* Fix member-ordering-alphabetically-order.test.ts

* Linting

* Don't check setter getters

* Implement `nodeCanBeDecorated`

* Fix comment

* Fix type

* Revert

* Fix

* Use `ts.hasAmbientModifier`

* Revert "Use `ts.hasAmbientModifier`"

This reverts commit 04e3b73.

* refactor: use `getModifiers` and `getDecorators`

* Remove stub hasAmbientModifier

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Co-authored-by: Josh Goldberg <[email protected]>

Author: fisker