fix(mcp): add missing submodules to switch-submodules script

[dkalinovInfra]

Description

Related Issue

Closes #

Type of Change

• Bug fix (non-breaking change that fixes an issue)
• New feature (non-breaking change that adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)
• Documentation update
• Refactoring / code cleanup
• Build / CI configuration change

Affected Packages

• igniteui-cli (packages/cli)
• @igniteui/cli-core (packages/core)
• @igniteui/angular-templates (packages/igx-templates)
• @igniteui/angular-schematics (packages/ng-schematics)
• @igniteui/mcp-server (packages/igniteui-mcp)

Checklist

• I have tested my changes locally (npm run test)
• I have built the project successfully (npm run build)
• I have run the linter (npm run lint)
• I have added/updated tests as needed
• My changes do not introduce new warnings or errors

Additional Context

[Copilot]

Pull request overview

Updates the MCP documentation workspace’s switch-submodules.sh helper so it also switches the Angular doc pipeline submodules that are initialized in CI/local runs, preventing them from being left on the default pinned commit when a non-default branch is requested.

Changes:

• Add angular/igniteui-angular-samples to the list of submodules to switch.
• Add angular/igniteui-docfx to the list of submodules to switch.

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[coveralls]

coverage: 87.816%. remained the same — dkalinov/mcp-doc-pipeline-fix into master