[Stack Monitoring] Post-angular removal work

[matschaffer]

This can all happen after 7.16 feature freeze. Most should get done before release. Some could get bumped to 8.0, but will make that call when we come to it.

• [Stack Monitoring][Angular removal] Datepicker not updated when url is changed #112063
• [Stack Monitoring][Angular removal] Blank page between loading page and first page #112062
• [Stack Monitoring] SetupMode pane renders stale data #113873
• Uncaught TypeError on Stack Monitoring beats overview #109363
• [Stack Monitoring] Setup mode is not working for Elasticsearch nodes page #114076
• [Stack Monitoring][Angular removal] Stack monitoring sidenav link not working from inside monitoring #112431
• [Stack Monitoring] Blank page when lacking permissions to setup self monitoring #114999
• Remove deprecation warning for internal collection from the stack monitoring UI #111629
• [Stack monitoring] Remove monitoring.ui.render_react_app feature toggle #115504
• [Stack Monitoring] Fix failing Node Detail tests #115408
• [Stack Monitoring] [Angular Removal] Avoid multiple requests simulataneously #111536
• [Stack monitoring] Logstash pages breadcrumbs are not updated #114807
• [Stack monitoring] Logstash pipeline flyout not closed on first click  #114817

[matschaffer]

I removed #113715 per @neptunian 's comment that it's probably been happening since before react.

[estermv]

Removing #112512 as I'm not considering it part of the removal, it was more a collection of thoughts.

Closing this as all tasks have been completed.