bots: Customize reactivation confirmation modal for bots.

Since bots can't join user groups, and end users don't think of bots
as a special class of users, it's worth having special text here.

Fixes: #23270.

tools/lib/capitalization.py

@@ -52,6 +52,7 @@ IGNORED_PHRASES = [
     # BeautifulSoup will remove <z-user> which is horribly confusing,
     # so we need more of the sentence.
     r"<z-user></z-user> will have the same role",
+    r"<z-user></z-user> will have the same properties",
     # Things using "I"
     r"I understand",
     r"I'm",