Avoid using progress indicator within async builder in Flutter web #538
Description
Use case
https://monosnap.com/file/tqw2m9I2R73Y0M8fa29zacqm1vH0BS (from #535 (comment))
Proposal
The default async builder should detect web and fallback to something simpler like a Text widget. If it's decided to render some "loading" string, app localization should be taken into consideration.