MM-47811: improve error handling for removeUserFromTeam function

[hionay]

Summary

Error handling for the removeUserFromTeam function updated to return an error in case of failure.
Update includes the use of multierror.Error for appending all errors and returning error if one occurs for the function teamUsersRemoveCmdF.

Ticket Link

Fixes mattermost/mattermost#21475

[mattermod]

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[noxer]

Hi @hionay, thank you very much for your contribution. I'd like to request a few changes. Otherwise this looks good.

[hionay]

@noxer thanks for the review. I pushed the changes.

[noxer]

Looks good to me, thank you very much @hionay. I'll added Ibrahim as a second reviewer and then this PR is ready to merge.

[isacikgoz]

LGTM, thanks @hionay 🚀