Run tests for all web app packages in CI (#22579)

* Run tests for all web app packages in CI

* Test specific packages instead of all of them

* Revert back to using test-ci scripts and rely on Jest to count the number of CPU cores

* Revert more changes made to the web app CI tests

* Fix path to client package tests

webapp/boards/package.json

@@ -22,7 +22,7 @@
 		"test": "jest --forceExit --detectOpenHandles --verbose",
 		"test:watch": "jest --watch",
 		"test:updatesnapshot": "jest --updateSnapshot",
-		"test-ci": "jest --forceExit --detectOpenHandles --maxWorkers=2",
+		"test-ci": "jest --ci --forceExit --detectOpenHandles --maxWorkers=100%",
 		"clean": "rm -rf node_modules .eslintcache"
 	},
 	"dependencies": {