[mypy] Fix incorrect type hint for EAGLE3 support

[DarkLight1337]

Purpose

Use tuple[int, ...] instead of tuple[int]. Also see #22080 (comment)

Test Plan

Test Result

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Essential Elements of an Effective PR Description Checklist

• The purpose of the PR, such as "Fix some issue (link existing issues this PR will resolve)".
• The test plan, such as providing test command.
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[gemini-code-assist]

Code Review

This pull request aims to fix incorrect type hints for EAGLE3 support by changing tuple[int] to tuple[int, ...]. While the changes to function signatures are correct, the initialization of self.aux_hidden_state_layers in LlamaModel and Qwen2Model introduces a syntax error that will cause a TypeError at runtime. I've provided suggestions to fix this critical issue by separating the type hint from the value assignment.

[22quinn]

LGTM