Showing unknown channel and on share board modals if channel is no longer accessible

[jespino]

Summary

When you are not a member of the channel you are not able to see the information, before this changes, if we were no able to see the information we didn't show anything. Now we are showing the "Unknown Channel" to allow the admins to see there is linked to a channel and allowing to unlink it.

It also includes some fixes in the translations and update the translation strings.

Ticket Link

Fixes #3605

[sbishel]

/update-branch

[sbishel]

/update-branch

[sbishel]

/update-branch

[mattermod]

Cherry pick is scheduled.

[mattermod]

Error trying doing the automated Cherry picking. Please do this manually

+++ Updating remotes...
Fetching upstream
Failed to add the RSA host key for IP address '140.82.114.4' to the list of known hosts (/app/.ssh/known_hosts).
From github.com:mattermost/focalboard
 * [new branch]        MM-45052_add-error-checking-insights -> upstream/MM-45052_add-error-checking-insights
 * [new branch]        agenda-board-hackathon -> upstream/agenda-board-hackathon
 * [new branch]        boards-as-persisted-category -> upstream/boards-as-persisted-category
 * [new branch]        contribute-playbooks-integration -> upstream/contribute-playbooks-integration
 * [new branch]        lhs-dnd                -> upstream/lhs-dnd
   d45a5c7e..959a5ce8  main                   -> upstream/main
   b3a0696b..d25cef97  release-7.3            -> upstream/release-7.3
Fetching origin
Failed to add the RSA host key for IP address '140.82.112.3' to the list of known hosts (/app/.ssh/known_hosts).
+++ Updating remotes done...
+++ Creating local branch automated-cherry-pick-of-focalboard-#3790-upstream-release-7.3-1664467002
Switched to a new branch 'automated-cherry-pick-of-focalboard-#3790-upstream-release-7.3-1664467002'
Branch 'automated-cherry-pick-of-focalboard-#3790-upstream-release-7.3-1664467002' set up to track remote branch 'release-7.3' from 'upstream'.

+++ About to attempt cherry pick of PR #3790 with merge commit 959a5ce8ff52a369852e1ab918439b712d8fe09a.

error: could not apply 959a5ce8... Showing unknown channel and on share board modals if channel is no longer accessible (#3790)
hint: after resolving the conflicts, mark the corrected paths
hint: with 'git add <paths>' or 'git rm <paths>'
hint: and commit the result with 'git commit'

+++ Conflicts detected:

UU webapp/src/components/shareBoard/channelPermissionsRow.tsx
Aborting.

+++ Aborting in-progress git cherry-pick.

+++ Returning you to the main branch and cleaning up.