Deprecated the exception listener format request attribute.

 Q             | A
| ------------- | ---
| Bug fix?      | no
| New feature?  | no
| BC breaks?    | no
| Deprecations? | yes
| Tests pass?   | yes
| Fixed tickets | #12624
| License       | MIT
| Doc PR        | none
I could just use an array as the first parameter, but since it'll probably only be used to extend another parameter bag, I've created the constructor like this. Since it'll replace the previous ParameterBag, the parent should be GC, thus there would be no duplication.