Update error handling to avoid crashing

We now capture unrecognized errors and report them to Sentry, rather
than throwing them. This ensures that any new failures would not brick
the wallet.

app/scripts/offscreen.js

@@ -1,3 +1,4 @@
+import { captureException } from '@sentry/browser';
 import { OffscreenCommunicationTarget } from '../../shared/constants/offscreen-communication';
 
 /**
@@ -37,20 +38,22 @@ export async function createOffscreen() {
         'Used for Hardware Wallet and Snaps scripts to communicate with the extension.',
     });
   } catch (error) {
+    if (offscreenDocumentLoadedListener) {
+      chrome.runtime.onMessage.removeListener(offscreenDocumentLoadedListener);
+    }
     if (
       error?.message?.startsWith(
         'Only a single offscreen document may be created',
       )
     ) {
       console.debug('Offscreen document already exists; skipping creation');
-      if (offscreenDocumentLoadedListener) {
-        chrome.runtime.onMessage.removeListener(
-          offscreenDocumentLoadedListener,
-        );
-      }
-      return;
+    } else {
+      // Report unrecongized errors without halting wallet initialization
+      // Failures to create the offscreen document does not compromise wallet data integrity or
+      // core functionality, it's just needed for specific features.
+      captureException(error);
     }
-    throw error;
+    return;
   }
 
   // In case we are in a bad state where the offscreen document is not loading, timeout and let execution continue.