feat(dashboard): show pending tool submissions in My Tools view

[LucasHahne]

Developers who submit tools through the intake workflow had no way to track submission status after leaving the submit page. This PR surfaces in-review tool submissions directly on the dashboard My Tools view so developers can see where their submissions stand without waiting for publication.

• API (/api/dashboard): Fetches the authenticated user's tool_intakes records still in the review pipeline (pending_review, needs_changes, approved, rejected) and returns them as pendingSubmissions.
• Dashboard UI: Renders pending submissions as table rows in the My Tools view with status badges (Under Review, Needs Changes, Approved, Rejected), reviewer notes on hover, and a Resubmit link when status is needs_changes.
• Tool count: Includes pending submissions in the My Tools total count so the summary stat reflects all of the developer's work-in-progress.

I tried using a preview dashboard to at least see how it would look like:

For now the Resubmit button just takes the developer back to the submit a tool page. Could potentially be adjusted in the next update.

As I just submitted a tool myself, I was missing that feature and tried implementing it.
Awaiting your feedback.

[vercel]

@LucasHahne is attempting to deploy a commit to the Power Platform Tool Box Team on Vercel.

A member of the Team first needs to authorize it.