Revert "Revert "Set BoardsProduct FF to on by default" (#22177)" (#22213)

This reverts commit aa61f8dfbb.

Co-authored-by: Mattermost Build <build@mattermost.com>

model/feature_flags.go

@@ -100,7 +100,7 @@ func (f *FeatureFlags) SetDefaults() {
 	f.InsightsEnabled = true
 	f.CommandPalette = false
 	f.CallsEnabled = true
-	f.BoardsProduct = false
+	f.BoardsProduct = true
 	f.SendWelcomePost = true
 	f.PostPriority = true
 	f.PeopleProduct = false