G2: Trigger removeLoading on language load finish

[denysoblohin-okta]

Description:

To reproduce:

• add language: 'uk' (or any other supported language) in .widgetrc.js
• run yarn start --watch
• add localStorage.removeItem('osw.languages'); at the beginning of playground/main.ts to load language every time
• change 200 to 0 here:
  

  okta-signin-widget/src/util/LanguageUtil.js

  Line 14 in 188eaa6

  }, 200);

PR Checklist

• Have you verified the basic functionality for this change?
• Did you add tests, as appropriate, following our Automated Test guidelines?
• Did you follow our Security Best Practices?
• Did you verify the change by running downstream monolith artifact? (Provide link to build below)
• Does this PR include noticeable changes to the UI? (If yes, attach screenshots/video below)

Issue:

• OKTA-800637

Reviewers:

Screenshot/Video:

Before :

After :

Downstream Monolith Build:

https://bacon-go.aue1e.saasure.net/commits?artifact=monolith&page=1&pageSize=6&sha=dcf9166f17fd4a6fcc2909d4c46d776e1e761156&tab=main

[denysoblohin-okta]

Need to remove class NO_BEACON_CLS anyway.
Otherwise beacon can have incorrect height after transition loading -> null -> constroller beacon (see videos)
In case of this transition isLoading (line 157) will be false in swap callback, but before Animations.swapBeacons it was true.
So to fix this height issue we can calculate isLoading before swap animation or remove NO_BEACON_CLS class anyway.

Example on /signin/verify/piv
Before this fix:

without.wasLoading.mov

After:

with.wasLoading.mov

[denysoblohin-okta]

Do not remove non-loading beacon

[denysoblohin-okta]

trigger('loading', false) will do nothing here because of this line:

okta-signin-widget/src/v1/views/shared/Header.ts

Lines 180 to 181 in 97e8b74

	if (!isLoading || isLoadingBeacon(this.currentBeacon)) {
	return;

We need to trigger removeLoading event. There are similar approaches in v1 codebase. Example

okta-signin-widget/src/v1/controllers/RecoveryLoadingController.js

Lines 31 to 33 in 97e8b74

	.catch(function() {
	self.options.appState.trigger('loading', false);
	self.options.appState.trigger('removeLoading');

[shawyu-okta]

LGTM. Please target 7.24 before merging.