chore: need to run install part of the package creation

packages/cli/templates/default-plugin/package.json.hbs

@@ -36,6 +36,7 @@
   "devDependencies": {
     "@backstage/cli": "^{{backstageVersion}}",
     "@backstage/dev-utils": "^{{backstageVersion}}",
+    "@backstage/test-utils": "^{{backstageVersion}}",
     "@testing-library/jest-dom": "^5.10.1",
     "@testing-library/react": "^10.4.1",
     "@testing-library/user-event": "^12.0.7",

packages/e2e-test/src/commands/run.ts

@@ -271,7 +271,12 @@ async function createPlugin(
 
     const pluginDir = resolvePath(appDir, 'plugins', canonicalName);
 
-    for (const cmd of [['tsc'], ['lint'], ['test', '--no-watch']]) {
+    for (const cmd of [
+      ['install'],
+      ['tsc'],
+      ['lint'],
+      ['test', '--no-watch'],
+    ]) {
       print(`Running 'yarn ${cmd.join(' ')}' in newly created plugin`);
       await runPlain(['yarn', ...cmd], { cwd: pluginDir });
     }