This flake was happening since `wait_for_fully_processed_message`
only checks if the `star` icon is displayed on the message but
doesn't check for current narrow or waits for the narrow to
change.
Since narrow is changed to the message narrow after sending a
message. If we don't wait for narrow to change, this narrow change
can make the `get_current_msg_list_id` call return true for the
wrong narrow change. Which causes message list id of the wrong
message list to be returned and hence we cannot locate this
message list id.
To fix it, we check if sending this message will cause a narrow
change and if true, we wait for the narrow to change before
checking if the message is visible.
Just verifying that a `message-list` is rendered is not enough to
ensure that we are in the correct narrow. We need to check
if we are narrowed to the correct message list id.
This prevents CI from failing unexpectedly.
Removes two 'narrow_to_recipient' banners which were
shown after sending a message to a different conversation.
Now, the sender is narrowed to the conversation where
message was sent.
Fixes#29186.
This also introduces a combo grid/flex layout, which will also be
applied to the DM and Streams headings.
Because there are now multiple classes referenced from the
Puppeteer tests, those selectors now include the expanded
navigation area's parent ID selector.
