Fix execution in console in terminal interaction mode

[krassowski]

References

Fixes #16339

Code changes

• adds a test for executing console cells in terminal interaction mode (should fail in first commit)
• fixes the issue

User-facing changes

Executing cells in console in terminal interaction mode works

Backwards-incompatible changes

None

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[JasonWeill]

Tested locally, code looks good. Thanks!

[krassowski]

@meeseeksdev please backport to 4.2.x

[lumberbot-app]

Owee, I'm MrMeeseeks, Look at me.

There seem to be a conflict, please backport manually. Here are approximate instructions:

1. Checkout backport branch and update it.

git checkout 4.2.x
git pull

2. Cherry pick the first parent branch of the this PR on top of the older branch:

git cherry-pick -x -m1 f1a006db4701ae545d5a2a05917b7e53b7074c94

3. You will likely have some merge/cherry-pick conflict here, fix them and commit:

git commit -am 'Backport PR #16348: Fix execution in console in terminal interaction mode'

4. Push to a named branch:

git push YOURFORK 4.2.x:auto-backport-of-pr-16348-on-4.2.x

5. Create a PR against branch 4.2.x, I would have named this PR:

"Backport PR #16348 on branch 4.2.x (Fix execution in console in terminal interaction mode)"

And apply the correct labels and milestones.

Congratulations — you did some good work! Hopefully your backport PR will be tested by the continuous integration and merged soon!

Remember to remove the Still Needs Manual Backport label once the PR gets merged.

If these instructions are inaccurate, feel free to suggest an improvement.