BUG: Fix for _validate_setitem_value fails to raise for PandasArray 
- [x] closes #51044 
- [x] Test cases added and passed
- [x] All code checks passed
- [x] Added type annotations to new methods i.e. _validate_setitem_value in pandas/core/arrays/numpy_.py.
- [x] Added an entry in the latest `doc/source/whatsnew/v3.0.0.rst` file for the bug fix.

Hi @mroeschke, @jbrockmendel! I am a new contributor to pandas community and would love to get the feedback on the changes here. Thanks!  Thanks for the pull request, but it appears to have gone stale. If interested in continuing, please merge in the main branch, address any review comments and/or failing tests, and we can reopen.