🔧 fix: Make assistant tool filtering compatible with plugin filtering

[bnord01]

Fixes #3324

Summary

The includedTools config option expects the pluginKey/tool.name for filtering included tools, which is incompatible with the implementation in loadAndFormatTools used for loading assistant tools.

This change uses both filename and tool.name for filtering tools in ToolService.loadAndFormatTools in order to make it compatible with the old implementation as well as the behaviour of plugin filtering.

Change Type

• Bug fix (non-breaking change which fixes an issue)

Testing

1. Use a configuration with assistants + plugins enabled.
2. Set includedTools to ['calculator', 'azure-ai-search'] in librechat.yaml
3. Verify plugins are properly filtered in plugins.
4. Create/Update assistant try to add tool.
5. Observe the Calculator and Azure AI Search tool being available.

Test Configuration:

1. Use a configuration with assistants + plugins enabled.
2. Set includedTools to ['calculator', 'azure-ai-search'] in librechat.yaml

Checklist

Please delete any irrelevant options.

• My code adheres to this project's style guidelines
• I have performed a self-review of my own code
• I have commented in any complex areas of my code
• I have made pertinent documentation changes
• My changes do not introduce new warnings
• I have written tests demonstrating that my changes are effective or that my feature works
• Local unit tests pass with my changes
• Any changes dependent on mine have been merged and published in downstream modules.
• A pull request for updating the documentation has been submitted.