chore: iframe rendering optimization

[PKulkoRaccoonGang]

🚨 Dependencies:

• 🔗 frontend-app-authoring PR

XBlock events

• 🔗 edx-plarform PR
• 🔗 frontend-app-authoring PR

Description

This PR provides iframe reload optimizations for various xblock related actions. Added some improvements related to scrolling to the current xblock. Fixed behavior of the xblock action dropdown list.

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Thanks for the pull request, @PKulkoRaccoonGang!

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