Why this change?
The tags modal loads more tags via infinite loading based on when the last tag in the
given page appears in the viewport for the user. When it comes in to
view, a request is then triggered to fetch additional tags. To ensure
that we are only loading a single page of tags each time the modal is
opened, we previously set a max height on the modal's body to ensure
that the last tag which appears in the modal will be outside of the view
port in the initial load. However, this has regressed recently due to
unknown reasons and resulted in multiple pages of tags being loaded
immediately from the server as the modal's height was not restricted.
This regression was caught by an existing test but was unfortunately
determined as flaky.
What does this change do?
This change restores the max height on the edit navigation menu tags
modal on dekstop.
What is the problem?
Before this change, we were relying on the `/tags` endpoint which
returned all the tags that are visible to a give user on the site leading to potential performance problems.
The attribute keys of the response also changes based on the `tags_listed_by_group` site setting.
What is the fix?
This commit fixes the problems listed above by creating a dedicate `#list` action in the
`TagsController` to handle the listing of the tags in the edit
navigation menu tags modal. This is because the `TagsController#index`
action was created specifically for the `/tags` route and the response
body does not really map well to what we need. The `TagsController#list`
action added here is also much safer since the response is paginated and
we avoid loading a whole bunch of tags upfront.
Why this change?
A new component based API for modals was introduced in
b3a23bd9d6. This commit moves the edit
navigation menu tags and categories modal to the new API.
