Use public API instead of removed private function in te_llama.py

[janekb04]

Description

Replaced use of _load_state_dict_into_model with model.load_state_dict because the private function _load_state_dict_into_model was removed in huggingface/transformers#36335.

Without this fix, the example no longer works with the most recent version of Hugging Face Transformers.

Type of change

• Documentation change (change only to the documentation, either a fix or a new content)
• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• Infra/Build change
• Code refactoring

Changes

• Replaced use of _load_state_dict_into_model with model.load_state_dict because the private function _load_state_dict_into_model was removed in Update form pretrained to make TP a first class citizen huggingface/transformers#36335

Checklist:

• I have read and followed the contributing guidelines
• The functionality is complete
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• My changes generate no new warnings
• I have added tests that prove my fix is effective or that my feature works
• New and existing unit tests pass locally with my changes

[ksivaman]

LGTM

[sudhakarsingh27]

LGTM