[WIP][FrameworkBundle] REFS #11294 Controller class become abstract

| Q             | A
| ------------- | ---
| Bug fix?      | [no]
| New feature?  | [no]
| BC breaks?    | [yes]
| Deprecations? | [no]
| Tests pass?   | [no]
| Fixed tickets | [#11294]
| License       | MIT
| Doc PR        | []