Fix instances of double translation and guard translation calls using typescript (#11443)

Co-authored-by: Richard van der Hoff <1389908+richvdh@users.noreply.github.com>

src/utils/MultiInviter.ts

@@ -308,8 +308,7 @@ export default class MultiInviter {
                         case "ORG.MATRIX.JSSDK_MISSING_PARAM":
                             if (getAddressType(address) === AddressType.Email) {
                                 errorText = _t(
-                                    "Cannot invite user by email without an identity server. " +
-                                        'You can connect to one under "Settings".',
+                                    'Cannot invite user by email without an identity server. You can connect to one under "Settings".',
                                 );
                             }
                     }