Fixing argument type hints for evalsha and similar commands.

[petyaslavova]

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Description of change

Fixing #3455

Non-breaking change because the change from list to Union[KeyT, EncodableT] is for an internal/private method's argument type hint.

[Copilot]

Pull Request Overview

This PR fixes type hints for Redis Lua script execution commands by updating parameter type annotations from restrictive string types to more accurate Union types. The changes address issue #3455 and improve type safety without breaking existing functionality.

• Updated *keys_and_args parameter type hints from str or list to Union[KeyT, EncodableT]
• Applied consistent type annotations across all eval and evalsha methods
• Reformatted method signatures for better readability

Comments suppressed due to low confidence (1)

redis/commands/core.py:1

• The original type hint list for *keys_and_args in _evalsha method is incorrect. Variadic arguments (*args) cannot be typed as list - this would cause type checking errors. The fix to Union[KeyT, EncodableT] correctly represents the type of individual arguments.

# from __future__ import annotations

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