Improve tokenizer_type error message clarity (Issue #41553)
Author: alivezvaei110-lab
Pull request: yes
Labels: name: Code agent slop

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This PR improves the error message for an unrecognized tokenizer_type in the AutoTokenizer class. It provides a clearer message for users, directing them to check the tokenizer type name or select one of the supported tokenizer types. This fixes Issue #41553.


Comments:
**[For maintainers]** Suggested jobs to run (before merge)

run-slow: auto

Hi! This PR improves the clarity of the error message for an unrecognized tokenizer_type, as discussed in Issue #41553. Please let me know if any changes are needed. Thanks!