cli: fix running tests from root

Signed-off-by: Patrik Oldsberg <poldsberg@gmail.com>

.changeset/breezy-wasps-sparkle.md

@@ -0,0 +1,5 @@
+---
+'@backstage/cli': patch
+---
+
+Fixed a bug in the built-in Jest configuration that prevented it from identifying packages that had migrated to using the new package scripts to run tests.

packages/cli/config/jest.js

@@ -175,7 +175,10 @@ async function getRootConfig() {
       // script to determine whether a given package should be tested
       const packageData = await fs.readJson(packagePath);
       const testScript = packageData.scripts && packageData.scripts.test;
-      if (testScript && testScript.includes('backstage-cli test')) {
+      const isSupportedTestScript =
+        testScript?.includes('backstage-cli test') ||
+        testScript?.includes('backstage-cli package test');
+      if (testScript && isSupportedTestScript) {
         return await getProjectConfig(projectPath, packageData.name);
       }