[FIX] sms: fix some usability issues

- In the portal chatter, when a message was send by sms and failed
the icon was grey. Change it to make it red when there is a failure
(revert by another task).

- In the sms composer wizard, if the sanitized number is wrong,
show 'Raoul Grosbedon (Invalid number)' instead of 'Raoul Grosbedon (False)'.

Task 2075733

addons/sms/static/src/scss/thread.scss

@@ -1,4 +1,4 @@
-i.o_thread_message_sms.o_thread_message_sms_error {
+.o_thread_message_sms.o_thread_message_sms_error {
     color: red;
     opacity: 1;
     cursor: pointer;

addons/sms/wizard/sms_composer.py

@@ -111,7 +111,7 @@ class SendSMS(models.TransientModel):
                 if len(records) == 1:
                     self.recipient_description = '%s (%s)' % (
                         res[records.id]['partner'].name or records.display_name,
-                        res[records.id]['sanitized']
+                        res[records.id]['sanitized'] or _("Invalid number")
                     )
             else:
                 self.recipient_invalid_count = 0 if (self.sanitized_numbers or (self.composition_mode == 'mass' and self.use_active_domain)) else 1