TF-2668 Add warning icon when email rule has target mailbox no exist#2790

dab246 wants to merge 2 commits intorefactorlinagora/tmail-flutter:refactorfrom

maintain-v0.11.3/tf-2668-fix-email-rule-then-delete-the-mailboxlinagora/tmail-flutter:maintain-v0.11.3/tf-2668-fix-email-rule-then-delete-the-mailboxCopy head branch name to clipboard