cli: add ESM support to Jest config + tests

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

package.json

@@ -49,8 +49,8 @@
     "storybook": "yarn ./storybook run storybook",
     "techdocs-cli": "node scripts/techdocs-cli.js",
     "techdocs-cli:dev": "cross-env TECHDOCS_CLI_DEV_MODE=true node scripts/techdocs-cli.js",
-    "test": "NODE_OPTIONS=--no-node-snapshot backstage-cli repo test",
-    "test:all": "NODE_OPTIONS=--no-node-snapshot backstage-cli repo test --coverage",
+    "test": "NODE_OPTIONS='--no-node-snapshot --experimental-vm-modules' backstage-cli repo test",
+    "test:all": "NODE_OPTIONS='--no-node-snapshot --experimental-vm-modules' backstage-cli repo test --coverage",
     "test:e2e": "NODE_OPTIONS=--no-node-snapshot playwright test",
     "tsc": "tsc",
     "tsc:full": "backstage-cli repo clean && tsc --skipLibCheck false --incremental false"
@@ -84,6 +84,9 @@
     ]
   },
   "prettier": "@backstage/cli/config/prettier",
+  "jest": {
+    "rejectFrontendNetworkRequests": true
+  },
   "resolutions": {
     "@changesets/assemble-release-plan@^6.0.0": "patch:@changesets/assemble-release-plan@npm%3A6.0.0#./.yarn/patches/@changesets-assemble-release-plan-npm-6.0.0-f7b3005037.patch",
     "@material-ui/pickers@^3.2.10": "patch:@material-ui/pickers@npm%3A3.3.11#./.yarn/patches/@material-ui-pickers-npm-3.3.11-1c8f68ea20.patch",
@@ -134,9 +137,6 @@
     "sort-package-json": "^2.8.0",
     "typescript": "~5.2.0"
   },
-  "jest": {
-    "rejectFrontendNetworkRequests": true
-  },
   "packageManager": "yarn@3.8.1",
   "engines": {
     "node": "20 || 22"