fix: Log unhandled Snap errors (#3157)

Log unhandled Snap errors for easier debugging when a Snap is crashing.
This lets developers dig up the actual reason for their Snap being
terminated in the logs.

---------

Co-authored-by: Maarten Zuidhoorn <[email protected]>

Author: FrederikBolding

packages/snaps-controllers/src/snaps/SnapController.ts

@@ -1507,7 +1507,10 @@ export class SnapController extends BaseController<
     );
   }
 
-  _onUnhandledSnapError(snapId: string, _error: SnapErrorJson) {
+  _onUnhandledSnapError(snapId: string, error: SnapErrorJson) {
+    // Log the error that caused the crash
+    // so it gets raised to the developer for debugging purposes.
+    logError(`Unhandled error from "${snapId}":`, error);
     this.stopSnap(snapId as SnapId, SnapStatusEvents.Crash).catch(
       (stopSnapError) => {
         // TODO: Decide how to handle errors.