refactor: improve temperature and top_p parameter handling

[EurFelux]

What this PR does

Before this PR:

• Used a single ambiguous function isNotSupportTemperatureAndTopP to check if models support temperature/top_p parameters
• The function name was unclear about whether it meant "both parameters unsupported" vs "parameters cannot be used together"
• No explicit handling for Claude 4.5's mutual exclusivity constraint between temperature and top_p

After this PR:

• Split into two clear functions: isSupportTemperatureModel and isSupportTopPModel
• Added isTemperatureTopPMutuallyExclusiveModel to explicitly handle Claude 4.5 reasoning models' constraint
• Improved code readability with positive logic (isSupportX instead of isNotSupportX)
• Added comprehensive test coverage for all new functions
• Deprecated old function with backward compatibility

Why we need it and why it was done in this way

Motivation:

1. The original function name isNotSupportTemperatureAndTopP was semantically ambiguous
2. Claude 4.5 reasoning models have a unique constraint where temperature and top_p are mutually exclusive (not just unsupported)
3. Better separation of concerns: support checking vs mutual exclusivity checking

Tradeoffs made:

• Added slightly more code but improved maintainability and clarity

Alternatives considered:

• Renaming the original function: Would cause breaking changes
• Using a single combined function: Would not clearly express the mutual exclusivity constraint

Breaking changes

None.

Special notes for your reviewer

Key changes:

1. src/renderer/src/config/models/utils.ts:

   • Added isSupportTemperatureModel() - checks if model supports temperature parameter
   • Added isSupportTopPModel() - checks if model supports top_p parameter
   • Added isTemperatureTopPMutuallyExclusiveModel() - checks if temperature and top_p are mutually exclusive (Claude 4.5)
   • Deprecated isNotSupportTemperatureAndTopP() with backward compatibility

2. src/renderer/src/aiCore/legacy/clients/BaseApiClient.ts:

   • Updated getTemperature() and getTopP() to use new functions

3. src/renderer/src/aiCore/prepareParams/modelParameters.ts:

   • Updated parameter handling logic to use new functions

4. Test coverage:

   • Added comprehensive tests for isSupportTemperatureModel
   • Added comprehensive tests for isSupportTopPModel
   • Added comprehensive tests for isTemperatureTopPMutuallyExclusiveModel
   • Kept tests for deprecated function to ensure backward compatibility

Testing:

• ✅ All 72 tests passing
• ✅ Biome format/lint checks passing
• ✅ No functional changes, pure refactoring

Checklist

• PR: The PR description is expressive enough and will help future contributors
• Code: Write code that humans can understand and Keep it simple
• Refactor: You have left the code cleaner than you found it (Boy Scout Rule)
• Upgrade: Impact of this change on upgrade flows was considered and addressed if required
• Documentation: A user-guide update was considered and is present (link) or not required. You want a user-guide update if it's a user facing feature.

Release note

NONE