Partially revert "LLM Tool parameters check (#123621)"

[tronikos]

Breaking change

Proposed change

Partially revert commit a85ccb9 that caused a regression.
Kept the original changes in tests since these are fine.

Type of change

• Dependency upgrade
• Bugfix (non-breaking change which fixes an issue)
• New integration (thank you!)
• New feature (which adds functionality to an existing integration)
• Deprecation (breaking change to happen in the future)
• Breaking change (fix/feature causing existing functionality to break)
• Code quality improvements to existing code or addition of tests

Additional information

• This PR fixes or closes issue: fixes HassLightSet color parameter from Google Generative AI #128314
• This PR is related to issue:
• Link to documentation pull request:

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[Shulyaka]

LGTM as a hotfix.
I think that parameter validation should be the responsibility of the helper, not the tool itself. But currently we only have tools for intents and scripts, and they all do their own validation.