Add a feature flag and the logic to hide plugin interactions on shared channels

[cwarnermm]

@claude Let's update the Mattermost Product Documentation to reflect the admin's connected workspaces (also known internally as shared channels) product experience from Mattermost server v10.10 onward in mattermost/mattermost#31185. Starting from the master branch, ensure the docs PR is added to the v10.10-documentation branch. The doc updates the connected workspaces docs that plugin components are hidden by default but can be shown by enabling the EnableSharedChannelsPlugins feature flag.

[cwarnermm]

@claude - take a look at the request above

[claude]

Claude finished @cwarnermm's task —— View job • claude/issue-8072-20250618_131651 • Create PR ➔

---

Documentation Update for Connected Workspaces Plugin Behavior

I've successfully updated the Mattermost Product Documentation to reflect the changes in connected workspaces (shared channels) from v10.10 onward, specifically regarding plugin components being hidden by default.

Tasks:

• Read repository setup instructions (CLAUDE.md) - No CLAUDE.md found
• Search for existing connected workspaces documentation
• Review current documentation structure and content
• Update connected workspaces main documentation file
• Update configuration settings documentation
• Commit changes with appropriate message
• Provide PR creation link targeting v10.10-documentation branch

Changes Made:

Connected Workspaces Documentation (source/onboard/connected-workspaces.rst):

• Added "Plugin component interaction" section explaining the new behavior from v10.10 onward
• Documented that plugin components are hidden by default in shared channels
• Explained how to enable them with EnableSharedChannelsPlugins flag
• Added notes about ensuring consistent plugin configuration across instances

Configuration Settings Documentation (source/configure/site-configuration-settings.rst):

• Added EnableSharedChannelsPlugins to the list of connected workspace settings
• Created dedicated configuration section with full documentation
• Updated text to reflect there are now three settings instead of two

Summary:

✅ Completed: Updated documentation to reflect that plugin components are hidden by default in connected workspaces/shared channels starting from Mattermost Server v10.10, with the ability to enable them using the EnableSharedChannelsPlugins feature flag.

---