- allows one to continually open files while keeping quick open widget focused
- uses the right modifier key to open in background
- can open in split view if using the cmd trigger key

This reverts commit 3a52eb26.

when re-showing the quick pick for input honor the last typed value and only select the default value

This reverts commit ce3fb81e.

Extensions quick open: Can no longer click into installing extension without quick open closing (fixes #2492)