Added 'Access Denied' screen for unauthorized MCP users

[lucasgoral]

What this PR does / why we need it:

• Added logic to show error page with info when user is not authorized to access MCP
• Centered error messages
• Improved infobox for non IDP is not supported message

[Copilot]

Pull Request Overview

This PR adds an authorization layer to the Managed Control Plane (MCP) page to display an "Access Denied" screen when users lack permission to view MCP resources. The implementation checks user authorization by attempting to access CRD resources and handles 401/403 errors appropriately.

Key Changes

• Added ManagedControlPlaneAuthorization wrapper component that checks user permissions via CRD access
• Created reusable Center component for centering content vertically and horizontally
• Enhanced Infobox component with size-specific icon styling and noMargin prop

Reviewed Changes

Copilot reviewed 11 out of 12 changed files in this pull request and generated 3 comments.

Show a summary per file

File	Description
src/spaces/mcp/authorization/ManagedControlPlaneAuthorization.tsx	New authorization wrapper component that checks CRD access and shows access denied screen for unauthorized users
src/spaces/mcp/pages/McpPage.tsx	Wraps MCP page content with authorization check and updates loading indicator to use Center component
src/lib/api/types/crossplane/CRDList.ts	Adds CRDRequestAuthCheck resource with jq filter for lightweight authorization checks
src/components/Ui/Center/Center.tsx	New utility component for centering content with flexbox
src/components/Ui/Center/Center.module.css	Styles for the Center component
src/components/Ui/Infobox/Infobox.tsx	Adds noMargin prop and size-specific icon styling
src/components/Ui/Infobox/Infobox.module.css	Adds icon-sm, no-margin styles, and updates size-sm styling
src/components/Ui/NotFoundBanner/NotFoundBanner.tsx	Wraps content with Center component for consistent positioning
src/components/ControlPlanes/ControlPlaneCard/ControlPlaneCard.tsx	Fixes logic to show either warning or connect button (not both)
src/lib/shared/McpContext.tsx	Removes trailing whitespace
public/locales/en.json	Adds translation keys for access denied messages

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[Copilot]

Pull request overview

Copilot reviewed 11 out of 12 changed files in this pull request and generated 1 comment.

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[Copilot]

@lucasgoral I've opened a new pull request, #383, to work on those changes. Once the pull request is ready, I'll request review from you.

[Hubert-Szczepanski-SAP]

GJ! lgtm :)