Bug: Ability to un-hide a board

[Pinjasaur]

Steps to reproduce the behavior

1. Hide a board
2. It's now hidden from being rendered, what if I want to see it again?

Expected behavior

Ability to unhide a board besides the very-technical workaround of manually sending a PUT request with the updated hiddenBoardIDs key & values.

Screenshots (optional)

If applicable, add screenshots or a screen recording to elaborate on the problem.

Edition and Platform

• Edition: Mattermost Boards (plugin)
• Version: 7.2 rc2
• Browser and OS: FF104 Mac

Additional context (optional)

Add any other context about the problem here, and any notes about the severity:

• Sev 1: Affects critical functionality without a workaround
• Sev 2: Affects major functionality with a difficult or non-obvious workaround
• Sev 3: Affects minor, non-critical functionality

[Pinjasaur]

I now see handleUnhideBoard which seems to be work if you have a direct link to a board? It would be nice to have an alternative method so I can't lock myself out of a board, so to speak.

[wuwinson]

@Pinjasaur This is the same behavior as Channels - you can also still search for the board from the board switcher, which would unhide it if you "join" again. Closing out.