Add expand and collapse functionality to Operations settings

On the Operations Settings, the Incidents and Tracing sections should have 'Collapse' buttons, same as the Error Tracking and External Dashboard sections

Original description

Now that we're adding content to Settings > Operations (gitlab-ce#55199, gitlab-ce#55177), we should provide expand/collapse functionality.

The MRs gitlab-ce!23724 and gitlab-ee!8786 added some of the necessary styles in preparation. All that's remaining to do is to add the expand/collapse buttons and the required JS.

Because of the number of options available, there are several possible default states:

error_tracking status \ edition	CE	EE
off	page not available	expanded
on	expanded	collapsed