RESTART_WORKSPACE action missing SCC mismatch check

[snecklifter]

Describe the bug

The RESTART_WORKSPACE action handler in Provider.tsx does not call checkSccMismatch() before restarting. Every other start/restart action (START_DEBUG_AND_OPEN_LOGS, START_IN_BACKGROUND, RESTART_DEBUG_AND_OPEN_LOGS) performs this check and logs a warning when the workspace was created with a different container SCC than what is currently configured.

This means a plain "Restart Workspace" on a workspace with an SCC mismatch will silently proceed without any warning, while all other start/restart actions warn the user.

Steps to reproduce

1. Configure a cluster with a non-default SCC for workspace containers.
2. Create a workspace.
3. Change the SCC configuration.
4. Use the kebab menu to select "Restart Workspace".
5. Observe no warning is logged — contrast with "Open in Debug mode" or "Start in Background" which log a console.warn.

Expected behavior

RESTART_WORKSPACE should call checkSccMismatch() and log a warning, consistent with all other start/restart actions.

Dashboard PR

eclipse-che/che-dashboard#1596