Unable to edit field when keyboard nav cursor is on block

[samelhusseini]

Describe the bug

Unable to edit a field by clicking on it when the keyboard nav cursor is on a block. We're able to when its on a field, why not block?
@alschmiedt FYI

To Reproduce

Steps to reproduce the behavior:

1. Go to the playground, drag a number of blocks together
2. Enable keyboard nav
3. Traverse around such that the cursor is on a block like so:

4. Attempt to click on a field to edit it. Unable to click.

Expected behavior

Should be able to edit the field regardless what state we're in for keyboard nav.

Screenshots

Attached above.

Desktop (please complete the following information):

• OS: [e.g. iOS]
• Browser [e.g. chrome, safari]
• Version [e.g. 22]

Smartphone (please complete the following information):

• Device: [e.g. iPhone6]
• OS: [e.g. iOS8.1]
• Browser [e.g. stock browser, safari]
• Version [e.g. 22]

Stack Traces

Replace with error stack trace.

Additional context

[alschmiedt]

Fixed in #3745