Typrescript fixes and added TypeScript Type Check to the pipeline

[lucasgoral]

What this PR does / why we need it:
Typrescript fixes and added strict TypeScript Type Checking to the pipeline to make the code less error prone

[Copilot]

Pull Request Overview

This PR addresses TypeScript type safety issues across multiple components by improving type definitions and adding proper type assertions. The changes focus on standardizing type definitions for table cell instances and handling potentially undefined values more safely.

• Standardized CellData interface across components to use Record<string, unknown> for row originals
• Added proper type guards and assertions for accessing nested properties
• Imported missing TypeScript type definitions

Reviewed Changes

Copilot reviewed 8 out of 8 changed files in this pull request and generated 5 comments.

Show a summary per file

File	Description
YamlEditor.tsx	Added event existence check before calling onChange callback
ProjectsList.tsx	Refactored cell instance types and added type assertions for accessing row original properties
MemberTable.tsx	Changed row original type to generic Record and added type assertions for property access
ImportMembersDialog.tsx	Introduced new CellData interface and updated Cell component with proper type casting
FeedbackButton.tsx	Imported TextAreaInputEventDetail type and simplified function signatures
ControlPlaneListWorkspaceGridTile.tsx	Updated createErrorView parameter to accept undefined error values
Providers.tsx	Standardized CellData interface and added type assertions for row original property access
MCPHealthPopoverButton.tsx	Cleaned up CellData interface and updated all Cell components to use consistent typing

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[andreaskienle]

Thanks for taking care of this 🙏👍

Two suggestions:

• Let's add a script to package.json and run this explicitly in our pipeline
• Let's get rid of the custom CellData<T> definitions and rely on type inference. I marked a couple of occasions but I think we can simply remove them all

[andreaskienle]

So clean 🤩 🫧