Prevent boards product from being included automatically (#23539)

* Prevent boards product from being included automatically

* Fix config diff test

* Update prepackaged plugin version

Co-authored-by: Scott Bishel <scott.bishel@mattermost.com>

* Readd boards/dist to the gitignore

* Does not enable the focalboard plugin by default

* Update plugin version to v7.10.3

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Co-authored-by: Scott Bishel <scott.bishel@mattermost.com>

webapp/scripts/dev-server.js

@@ -13,7 +13,6 @@ async function watchAllWithDevServer() {
 
     const commands = [
         {command: 'npm:dev-server --workspace=channels', name: 'webapp', prefixColor: 'cyan'},
-        {command: 'npm:start:product --workspace=boards', name: 'boards', prefixColor: 'blue'},
         {command: 'npm:start:product --workspace=playbooks', name: 'playbooks', prefixColor: 'red'},
     ];