ui_web.views.getHostElement API exists for packages to have a safe place on the DOM to inject additional content.
Currently, getHostElement only returns hostElement in a multi-view embedding scenario.

Proposal

The proposal suggests extending this functionality to also return hostElement for the implicit view, applicable to both full-page embedding scenarios and custom element embedding. This way, this API can be independent of the different embedding strategies, allowing web package authors to initiate code updates in preparation for the multi-view world.

Some good examples from the Flutter org codebase where this functionality can be useful include image_picker_for_web and ng-flutter sample.

Related to #138930