Cache: revert DynamicCache init for BC (#33861)
* tmp commit
* tmp commit
* make fixup
* missing removal
* fix condition
* fix end-to-end compilation
* if -> elif
* BC
* BC
* use @deprecate_kwarg("num_hidden_layers", version="4.47.0")
* wups the import
* 🥴
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Co-authored-by: Arthur Zucker <arthur.zucker@gmail.com>
