QuickInput is not picking the first element as a fallback on Enter

[federicobozzini]

Bug Description:

When opening the QuickInput and pressing enter, vs-code by default selects the first element. This doesn't happen in Theia.

vs-code

Theia

Steps to Reproduce:

As an example to reproduce

1. Open a git-versioned project with Theia
2. Click on the branch name in the status bar (the QuickInput to choose the branch to checkout is presented, first element of the list is "create new branch...")
3. Press Enter. Nothing happens. In vs-code the first element is picked by default.

Additional Information

Possibly connected to #5674

• Operating System: Ubuntu 20.04
• Theia Version: 1.32