Iframe & configurator updates (widget-ui-9)

[fairlighteth]

Summary

• Fix pending tx count loader gap:

Screen.Recording.2023-10-20.at.12.52.20.mov

• iframeResizer refactor + fixed dynamic height adaption of iFrame content

Screen.Recording.2023-10-20.at.13.24.05.mov

• Fix favorite tokens display desktop/mobile

[github-actions]

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✅ @shoom3301
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