Update components to use custom icons

[Arlodotexe]

Background

In CommunityToolkit/Tooling-Windows-Submodule#66, we gave components the ability to declare a custom icon to be displayed in the sample app.

In CommunityToolkit/Windows#103, we migrated all non-Labs components to use the component icons.

Problem

Labs has not been updated with this change. If we need to update the Tooling submodule to latest main for any reason, we'll run into this problem as well.

Solution

Update tooling to latest main and finish adding the custom icon to all existing Labs components, including those still in PR.

[Arlodotexe]

This was closed in #451