[FrameworkBundle][Translation] moved cache to Translation component

| Q             | A
| ------------- | ---
| Bug fix?      | no
| New feature?  | yes
| BC breaks?    | no
| Deprecations? | no
| Tests pass?   | yes
| Fixed tickets | #10628
| License       | MIT
these should be protected for BC (they are protected in the FrameworkBundle translator currently)