[Bug]Add undo option when deleting a bookmark from edit mode

[AndiAJ]

Prerequisites

Have a couple of bookmarks saved.

Steps to reproduce

1. Tap to edit one of the bookmarks
2. Delete the bookmark using the upper right trash bin icon
3. Check the deletion confirmation snackbar

Expected behavior

Undo option should be available from the snackbar

Actual behavior

No undo option is available

Device information

• Android device:
  Google Pixel 3a (Android 9)
  OnePlus A3 (Android 6.0.1)
• Fenix version: Nightly Build #12410626 from 29/8

Notes

The confirmation snackbar was implemented in #4488

► Video with the snackbar when deleting a bookmark from edit mode

► Video wih the snackbar when deleting a bookmark in normal mode

┆Issue is synchronized with this Jira Task

[shahsurajk]

Wouldn't undo break the flow?

As mentioned the in the PR as well, here:

This doesn't make use of Undo.allowUndo as we already show a dialog for user confirmation, giving an option to undo, might break the flow (comments on this are welcomed).

Wouldn't the UX be a bit off?

[AndiAJ]

Hi @shahsurajk , not sure, I've thought that if the undo option is available when deleting a bookmark from the normal view, it should be available in edit mode as well.
@boek Could you please share your thoughts on this matter? :)

[stale]

See: #17373 This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. Thank you for your contributions.

[AndiAJ]

Still reproducible on 86.1.0 RC1 using a OnePlus A3 (Android 6.0.1)

[stale]

See: #17373 This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. Thank you for your contributions.

[AndiAJ]

Still reproducible on Firefox 95.0.0 Beta 1

[stale]

See: #17373 This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. Thank you for your contributions.