cli: explicit jest env resolution

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

.changeset/lovely-news-relax.md

@@ -0,0 +1,5 @@
+---
+'@backstage/cli': patch
+---
+
+The built-in Jest configuration now always uses the Jest environments that are bundled with the CLI by default. This avoids a situation where Jest potentially picks up an incompatible version of the environment package from a different dependency in the project.

packages/cli/config/jest.js

@@ -54,14 +54,14 @@ function getRoleConfig(role) {
     case 'common-library':
     case 'frontend-plugin':
     case 'frontend-plugin-module':
-      return { testEnvironment: 'jsdom' };
+      return { testEnvironment: require.resolve('jest-environment-jsdom') };
     case 'cli':
     case 'backend':
     case 'node-library':
     case 'backend-plugin':
     case 'backend-plugin-module':
     default:
-      return { testEnvironment: 'node' };
+      return { testEnvironment: require.resolve('jest-environment-node') };
   }
 }