Fix custom viewlet not being shown when its cached views are not active on registration

Snapcraft update. Fixes #63194 Fixes #57019

This is needed to understand which extension should enable the new port forwarding feature. Only logs that some extension is accessing localhost in a webview, not which port/resource is accessed

Fixes #70961

* themable dialog service

* add close action

* fix navigation, modality, and confirm

* addressing feedback, minor polish

Fixes #70352

This reverts commit e7ca7d58.