Display released version that includes pull request in the PR right column

[tbertels]

🏷️ Discussion Type

Product Feedback

Body

Right now, issues linked to a PR display the version that includes the PR linked to that issue:

But PRs on the other end don't include that information, so it's harder to know which version includes them:
You have to scroll down in the PR discussion until the "merged commit 1f7a212 into mpc-qt:master"

And click on the commit hash "1f7a212".

Then you'll see something like "master(mpc-qt/mpc-qt#636) v26.07 ... v26.01-master"
at the bottom of the merge commit description:

Where "v26.01-master" is the first version that includes the commit.
This is far from straightforward for users.
Note that it says "v26.01-master" (a tag on master) instead of "v26.01" (the tag of an actual release).

Instead, PRs should have a field on the right column that would show directly that information ("v26.01", not "v26.01-master").

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