Branch-switch logic in github checkout-prs still not perfect :/

[PawelLipski]

Well.... I'd simply expect for the PR #883 to be checked out 😅 and it doesn't happen

Same for g m github checkout-prs --by=mkondratek, I'd expect his only PR (#870) to be checked out, but it doesn't happen

[amalota]

So the current logic doesn't switch the branch associated with the PR if that branch is already present in the managed branches. I propose to change it so that the branch will get checked out when:

• there is only single PR that meets the requirements (checkout-prs SINLGE_PR_NR / --by=USER / --all / --mine) -> stays the same
• it does not matter whether branch associated with that single PR is already present in the managed branches -> changed

@PawelLipski wdyt?

[PawelLipski]

Okay! let's proceed with the above ☝🏻