feat: support mcp auth flow

[ZxBing0066]

INS-1427

Changes

• Support MCP auth flow

[Copilot]

Pull Request Overview

This PR implements support for MCP (Model Context Protocol) OAuth authentication flow, allowing MCP servers to authenticate users through OAuth 2.0 when required.

Key changes include:

• Addition of a new mcp-auth-flow grant type to OAuth2 authentication
• Implementation of an MCP OAuth client provider to handle authentication flows
• Integration of authentication confirmation modals and status tracking
• Enhanced error handling and token management for MCP connections

Reviewed Changes

Copilot reviewed 17 out of 17 changed files in this pull request and generated 3 comments.

Show a summary per file

File	Description
packages/insomnia/src/ui/modals.tsx	Registers the OAuth authorization status modal
packages/insomnia/src/ui/components/modals/oauth-authorization-status-modal.tsx	Adds IPC event handlers for showing/hiding auth modal
packages/insomnia/src/ui/components/modals/ask-modal.tsx	Adds onHide callback support and reorders modal operations
packages/insomnia/src/ui/components/mcp/mcp-url-bar.tsx	Implements MCP auth confirmation dialog handling
packages/insomnia/src/ui/components/mcp/mcp-request-pane.tsx	Enables MCP auth flow in request pane
packages/insomnia/src/ui/components/mcp/mcp-pane.tsx	Adds safe result extraction for MCP events
packages/insomnia/src/ui/components/editors/auth/o-auth-2-auth.tsx	Adds MCP auth flow grant type and UI modifications
packages/insomnia/src/ui/components/editors/auth/components/auth-select-row.tsx	Adds disabled state support to select element
packages/insomnia/src/ui/components/editors/auth/auth-wrapper.tsx	Passes MCP auth flow flag to OAuth2Auth component
packages/insomnia/src/network/o-auth-2/get-token.ts	Skips token handling for MCP auth flow
packages/insomnia/src/network/o-auth-2/constants.ts	Defines MCP auth flow grant type constant
packages/insomnia/src/models/request.ts	Updates OAuth2 type definition to include MCP auth flow
packages/insomnia/src/models/mcp-response.ts	Adds updateOrCreate method for MCP responses
packages/insomnia/src/main/network/mcp.ts	Implements comprehensive MCP OAuth provider and auth flow
packages/insomnia/src/main/ipc/electron.ts	Adds IPC channel definitions for auth events
packages/insomnia/src/entry.preload.ts	Exposes auth confirmation method to renderer
packages/insomnia/src/common/import-v5-parser.ts	Updates schema to include MCP auth flow grant type

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