fix: resolve gpt-5-codex streaming response issue (#10781)

* fix: resolve gpt-5-codex streaming response issue

- Add patch for @opeoginni/github-copilot-openai-compatible to fix text part ID mismatch
- Fix text-end event to use currentTextId instead of value.item.id for proper ID matching
- Add COPILOT_DEFAULT_HEADERS to OpenAI client for GitHub Copilot compatibility

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

* format code

---------

Co-authored-by: Claude <noreply@anthropic.com>

src/renderer/src/aiCore/legacy/clients/openai/OpenAIBaseClient.ts

@@ -1,4 +1,5 @@
 import { loggerService } from '@logger'
+import { COPILOT_DEFAULT_HEADERS } from '@renderer/aiCore/provider/constants'
 import {
   isClaudeReasoningModel,
   isOpenAIReasoningModel,
@@ -166,7 +167,8 @@ export abstract class OpenAIBaseClient<
         baseURL: this.getBaseURL(),
         defaultHeaders: {
           ...this.defaultHeaders(),
-          ...this.provider.extra_headers
+          ...this.provider.extra_headers,
+          ...(this.provider.id === 'copilot' ? COPILOT_DEFAULT_HEADERS : {})
         }
       }) as TSdkInstance
     }