Authentic Chinese Recipe Collection

Merge pull request #99523 from somewheresy/justin/e-1047-route-hermes-actual-provider-through-chat-completions-with

fix: /model onto Bedrock Mantle keeps SigV4 auth instead of 401ing

fix(providers): block Actual at Responses send sites (E-1047)

fix(providers): preserve Actual routing during startup and key reload (E-1047)

fix(providers): pin all Actual routes to chat completions (E-1047)

fix(providers): route Actual through chat completions (E-1047)