Add regression test for imported Monero backend rule on empty accounts

checkImportedWalletSettings must still force an imported lws wallet onto
the full node when the account has never configured Monero servers (its
userSettings is the empty object edge-core-js initializes). Documents that
the 'Expected a boolean, got undefined at .enableCustomServers' crash from
older builds is resolved by routing every asMoneroUserSettings consumer
through asMaybe.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

Author: peachbits

src/__tests__/moneroImportSettings.test.ts

@@ -89,4 +89,12 @@ describe('monero checkImportedWalletSettings', () => {
     )
     expect(result?.settings.backend).toBe('monerod')
   })
+
+  test('overrides lws -> monerod for an account with empty user settings', () => {
+    // A never-configured account stores `{}`; it resolves to Edge LWS, so an
+    // imported lws wallet must still be pushed to the full node.
+    const result = check({ backend: 'lws' }, {})
+    expect(result?.settings.backend).toBe('monerod')
+    expect(result?.warning).toBeTruthy()
+  })
 })