APM

• Move icons that were next to the heading into the header menu (opposite the breadcrumbs)
• Since the action menu is mounted in a separate React tree outside of the normal router context, use react-reverse-portal to mount it there.
• In the anomaly detection setup link, instead of showing a separate warning icon when anomaly detection is not set up, change the inspect icon to a warning icon.
• Change the "Add data" icon to use the same icon as shown on the Kibana home page
• Use a single alerting popover component (there were two very similar ones for home and service details, but now it just conditionally shows the transaction duration item based on whether a service name is present.)
• Make alert popover close on click when opened
• Include appMountParameters (which includes history and setHeaderActionMenu) in the APM and UX plugin contexts.
• Remove the isServiceMapEnabled check from the home tabs and make it a constant instead of a function.

Before

After

Observability

• Move feedback link into setHelpExtension menu
• Move add data link into action menu
• Move date picker up into the same level as the heading
• Fix filename of "data_picker" to "date_picker"

Before

After

References #81954.