Restore _init_weights value in no_init_weights (#18504)
* Recover _init_weights value in no_init_weights
For potential nested use.
In addition, users might modify private no_init_weights as well.
* Apply suggestions from code review
Co-authored-by: Sylvain Gugger <35901082+sgugger@users.noreply.github.com>
* Remove private variable change check
Co-authored-by: Sylvain Gugger <35901082+sgugger@users.noreply.github.com>
