Enable products for tests (#22757)

* Enable products for channels tests

* increase unit test timeout; check IsConfigReadOnly

* make app-layers

* Avoid loading boards tempaltes between tests to improve speed

* Fix delete query to be compatible with both databases

* Avoid preserving the templates for boards store tests

* Run all tests in one command

* Revert "Run all tests in one command"

This reverts commit 0330f7cd8f96b47776770e8f80ba6ba18d98b8d1.

* concurrent pkg group tests in CI

* Revert "Revert "Run all tests in one command""

This reverts commit 73892fec772575ff054a99ba9e00a7b57ca74164.

* Revert "concurrent pkg group tests in CI"

This reverts commit 550fb6cdd4a7f14d9632f2626bc66f389173b5d9.

* try testing 3 subsets of packages concurrently to improve time taken

* Revert "try testing 3 subsets of packages concurrently to improve time taken"

This reverts commit 97475f3c4eafa8bbe047097e0841220884f68cdc.

---------

Co-authored-by: Mattermost Build <build@mattermost.com>
Co-authored-by: wiggin77 <wiggin77@warpmail.net>

server/channels/app/server.go

@@ -137,6 +137,8 @@ type Server struct {
 
 	tracer *tracing.Tracer
 
+	skipProductsInit bool
+
 	products map[string]product.Product
 	services map[product.ServiceKey]any