[Stack monitoring] Angular migration clean-up

[estermv]

⚠️ DEPENDS ON: #111309

Required to clean to remove angular app from Stack Monitoring

• [Stack monitoring] Remove angular basic files #115207

Required to remove Angular from package.json

• Remove kibana_legacy components that have been moved into monitoring #115142
• Remove i18n angular remnants moved into monitoring plugin #115143
• [Stack monitoring] Clean rootScope and ngLocation from the GlobalState #115500
• [Stack monitoring] Remove getAngularInjector #115499

After angular is removed

• Refactor setup mode [Stack monitoring] Setup mode cleaning post migration #115556
  • Old renderer is removed
  • Unit tests for setup mode are updated

[elasticmachine]

Pinging @elastic/logs-metrics-ui (Team:logs-metrics-ui)

[matschaffer]

I moved the flag removal to #115504

[matschaffer]

Also moved the setup mode refactor/test points to #112512

[estermv]

@matschaffer I moved the refactor/test points back here. What is mentioned in this issue regarding the setup mode should be cleaned now unless there is a major reason to not do it. It should be quick and easy. (I was planning to finish the remaining bullet points between today and tomorrow 😅 )

The refactor setup mode task that was in the tech debt issue is to rewrite how the setup mode is implemented, because, in my opinion, the way it's currently implemented is complex and confusing probably because of the mix of Angular and React.

[matschaffer]

@estermv - cool. I'll leave it in your hands then. Seems like we might be done as far as upstream is concerned but you probably know better than I do.

[estermv]

Closing this as all tasks have been completed.