feat: Add custom connection parameter editor service and fix HTTP client auth logic

[Copilot]

Summary

This PR adds a custom connection parameter editor service for agent connections and fixes HTTP client authorization logic for ARM resources in the VSCode Logic Apps extension.

Changes

✨ New Features

Custom Connection Parameter Editor Service

• Added CustomConnectionParameterEditorService that provides specialized UI handling for agent connection parameters
• Returns CustomOpenAIConnector component for connectionProviders/agent connector type
• Integrated into VSCode React app service layer

Enhanced Logger Service

• Added logErrorWithFormatting method for improved error logging with stack traces and error causes
• Better debugging capabilities for development and production scenarios

🐛 Bug Fixes

HTTP Client Authorization Logic

• Fixed POST method authorization to properly handle ARM resource IDs and conditional auth scenarios
• Changed logic to only include Authorization header when (includeAuth OR isArmId) AND NOT noAuth
• Maintains backward compatibility while fixing edge cases where auth was incorrectly applied

Designer Edge Visibility

• Fixed issue with arrow visibility in the designer UI

🧹 Maintenance

Localization Cleanup

• Removed unused string resource zMKxg9 (regex validation message)

Testing

• ✅ All VSCode extension unit tests pass (25/25)
• ✅ HTTP client tests updated and passing (11/11)
• ✅ Code follows repository standards (eslint + biome)
• ✅ No breaking changes to existing functionality

Files Changed

Localize/lang/strings.json                                               
apps/vs-code-react/src/app/designer/services/customConnectionParameterEditorService.ts (new)
apps/vs-code-react/src/app/designer/servicesHelper.ts                   
apps/vs-code-react/src/app/services/Logger.ts                           
libs/designer/src/lib/ui/connections/edge.tsx                           
libs/vscode-extension/src/lib/services/__test__/httpClient.spec.ts       
libs/vscode-extension/src/lib/services/httpClient.ts                     

Impact

• Enhanced VSCode Logic Apps extension with better agent connection parameter handling
• More reliable HTTP client behavior for ARM resource authentication scenarios
• Improved error logging and debugging capabilities
• Cleaner codebase with removal of unused resources

Breaking Changes

None. All changes are backward compatible.

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