Retain editor focus after Run In Terminal

[andyw8]

I discovered that you can trigger a Code Lens with a keybinding, which is useful for Run In Terminal.

But currently the focus stays with the terminal so you need to focus back to the editor after doing so. This PR changes it to switch back automatically.

This does impact the current flow. For example, if someone is used to triggering a breakpoint with binding.b, they will now need to focus on the Terminal panel before doing anything. I expect the majority of uses for Run In Terminal are likely not doing that though, so overall it should be an improvement.

(Note: There is another change needed after this for the keyboard functionality to fully work).

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[st0012]

Do you mind recording demo vids for before/after comparison? I ran this branch but the behaviour seems to be the same (focus moves and stays at terminal).

[andyw8]

Sure, here's how it is on the current release. Notice that the cursor in the terminal is a solid block after the test finishes since it has focus.

main.mov

And here it is on the branch, where focus returns to the editor window:

branch.mov

[github-actions]

This pull request is being marked as stale because there was no activity in the last 2 months

[vinistock]

Just FYI: we're trying to collect feedback about dev's expectations related to this. This change makes the focus more consistent with other explorer actions, but run in terminal has been the most popular actions for a long time and no one has ever brought up that they would rather not focus on the terminal.

That is to say, it's unclear if the majority of devs will prefer this over the current experience and we're trying to assess that.

[vinistock]

Alright, in our internal surveys it seems like devs would overwhelmingly prefer the focus to be preserved, so let's move forward with this.

[andyw8]

Re-opened as #3679