Fix: Remove LiveKit turn-detector and ten_vad integrations due to licensin…

[iamprashant]

…g restrictions; add fallback handling

Description

Type of Change

• Bug fix (non-breaking change that fixes an issue)
• New feature (non-breaking change that adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• Documentation update
• Configuration change
• Refactoring (no functional changes)
• Test update
• Security fix

Related Issues

Fixes #

Checklist

General

• I have read the CONTRIBUTING guidelines
• My code follows the project's coding standards
• I have performed a self-review of my code
• I have commented my code, particularly in hard-to-understand areas

Testing

• I have added tests that prove my fix is effective or that my feature works
• New and existing unit tests pass locally with my changes
• I have tested my changes on multiple platforms (if applicable)

Documentation

• I have updated the documentation accordingly
• I have updated the API documentation (if applicable)

Security

• My changes do not introduce any security vulnerabilities
• I have not committed any sensitive data (API keys, passwords, etc.)

Screenshots (if applicable)

Additional Notes