* fix(gsvi_tts): Use the correct calling method (#5638)
Add some configuration items for GSVI
* fix(gsvi_tts): add default value for api_key in provider configuration
* fix(gsvi_tts): Adjust wherever the Authorization header is built to only include it when `self.api_key` is truthy
Delete some comments
* chore: ruff format
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Co-authored-by: Soulter <905617992@qq.com>