UVE: Remove loading state when page does not emit the CLIENT_IS_READY event

[rjvelazco]

Parent Issue

#30943

Issue

31219-uve-remove-loading-state-when-page-does-not-emit-the-client_is_ready-event.mov

Task

Tasks

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1. The Initial loading state should be removed even if the page does not emit the CLIENT_IS_READY event
2. Do not let the user edit the page before the load is completed

Proposed Objective

OKR: User Experience

Proposed Priority

Priority 3 - Average

Acceptance Criteria

• The Initial loading state should be removed even if the page does not emit the CLIENT_IS_READY event
• The user is not able to edit before the Page is fully loaded

Assumptions & Initiation Needs

I think we can use the onLoad event of the iframe. Once the iframe says it is ready, we can safely remove the loading