I can't close the edge channel for my snap

[Francisco Jimenez Cabrera]

Hello,

This issue was reported in the snapcraft.io website by Alan Pope:
https://github.com/canonical-web-and-design/snapcraft.io/issues/3141

I am able to reproduce the issue with the CLI:
```
$ snapcraft close testfran8 edge
Track Arch Channel Version Revision
latest amd64 stable - -
                 candidate - -
                 beta - -
                 edge 0.1 14
         arm64 stable - -
                 candidate - -
                 beta 0.1 15
                 edge ↑ ↑
         i386 stable - -
                 candidate - -
                 beta - -
                 edge 0.1 13

The edge channel is now closed.
```

For some reason, the edge channel is still open and I am able to install the snap:
```
$ snap install --edge testfran8
testfran8 (edge) 0.1 from Francisco Jiménez Cabrera (jkfran) installed
```

Thank you!

[Alan Pope 🍺🐧🐱 🦄 (popey)]

ubuntu@snap-advocacy:~$ snapcraft close signal-desktop edge
Track Arch Channel Version Revision
latest amd64 stable 1.38.1 337
                  candidate ↑ ↑
                  beta 1.38.1 337
                  edge ↑ ↑
         arm64 stable - -
                  candidate - -
                  beta - -
                  edge 1.30.0 296
         armhf stable - -
                  candidate - -
                  beta - -
                  edge 1.30.0 297
         i386 stable - -
                  candidate - -
                  beta - -
                  edge 1.30.0 292
         ppc64el stable - -
                  candidate - -
                  beta - -
                  edge 1.30.0 294
         s390x stable - -
                  candidate - -
                  beta - -
                  edge 1.30.0 293

The edge channel is now closed.

[Sergio Schvezov (sergiusens)]

If both the CLI and web front end display the same effect, this is most likely a Snap Store issue. Please bounce back if both client implementations are doing the wrong thing

[Matias Bordese (matiasb)]

There is an issue with the close channel logic incorrectly handling the request when closing the channel leaves the track-channelmap for the respective architecture empty, but not for every architecture (triggering an incomplete update to our backend snaprevs service).

I just forced a reindex which fixed the situation for the snaps mentioned here. On the other hand, there is work in progress to replace the existing release/close channel logic in dashboard to use the updated implementation that Charmhub is using, which should fix this issue (and some others).