Fix crash when invalid addresses are linked in HTML or Markdown toots

app/lib/tag_manager.rb

@@ -35,5 +35,7 @@ class TagManager
     domain = uri.host + (uri.port ? ":#{uri.port}" : '')
 
     TagManager.instance.web_domain?(domain)
+  rescue Addressable::URI::InvalidURIError
+    false
   end
 end