Make Teams and Channels System Console pages independent of the Group feature

Description

The new Team and Channels pages should be independent of the Group feature.

This requires the members to be added to the pages first so the feature has value beyond the group assignments.

https://mattermost.atlassian.net/browse/MM-14912
https://mattermost.atlassian.net/browse/MM-14906

QA Test Steps

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Status

Mana

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Assignee

Dennis Kittrell

QA Assignee

None

Reporter

Katie Wiersgalla

Epic Link

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Fix versions

Mattermost Team

Enterprise

Sprint

Labels

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QA Testing Areas

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GitHub Issue

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Components

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Configure