fixup! Bug 40933: Add tor-launcher functionality

Bug 42636: A bad bridge line might get TBA stuck.

A while ago I reworked the relationship between TorSettings and
TorProvider. While doing so I was too strict, and a failure to push
settings during initialization will stop the initialization itself,
which will result in TBA stuck at the splash screen.

The problem appears also on desktop (the user will get a prompt that
asks to restart Tor, even though it is not perfect, see #21053).
However, on desktop the user can go to the settings and deleting the
bridges from there (which is not an optimal experience anyway).

toolkit/components/tor-launcher/TorProvider.sys.mjs

@@ -232,11 +232,9 @@ export class TorProvider {
         await this.writeSettings(lazy.TorSettings.getSettings());
       } catch (e) {
         logger.warn(
-          "Failed to initialize TorSettings or to write our settings, so uninitializing.",
+          "Failed to initialize TorSettings or to write our initial settings. Continuing the initialization anyway.",
           e
         );
-        this.uninit();
-        throw e;
       }
     }