cli: fix react-dom/client check in Jest config

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

.changeset/chilled-taxis-dance.md

@@ -0,0 +1,5 @@
+---
+'@backstage/cli': patch
+---
+
+The check for `react-dom/client` in the Jest configuration will now properly always run from the target directory.

packages/cli/config/jest.js

@@ -28,7 +28,9 @@ const envOptions = {
 };
 
 try {
-  require.resolve('react-dom/client');
+  require.resolve('react-dom/client', {
+    paths: [paths.targetRoot],
+  });
   process.env.HAS_REACT_DOM_CLIENT = true;
 } catch {
   /* ignored */