ci: Use Node 20 for CodeSandbox examples (#7646)

* ci: Try to use Node 20 for CSB

* Simplify install/build scripts

* Fix installCommand

* Remove installCommand

* Undo

* Remove install:csb

.codesandbox/ci.json

@@ -1,5 +1,4 @@
 {
-  "installCommand": "install:csb",
   "buildCommand": "build:csb",
   "sandboxes": [
     "/examples/angular/basic",
@@ -9,5 +8,5 @@
     "/examples/vue/basic"
   ],
   "packages": ["packages/**"],
-  "node": "18"
+  "node": "20"
 }

package.json

@@ -11,7 +11,6 @@
     "clean": "pnpm --filter \"./packages/**\" run clean",
     "preinstall": "node -e \"if(process.env.CI == 'true') {console.log('Skipping preinstall...')} else {process.exit(1)}\" || npx -y only-allow pnpm",
     "prepare": "husky",
-    "install:csb": "corepack enable && pnpm install --frozen-lockfile",
     "test": "pnpm run test:ci",
     "test:pr": "nx affected --targets=test:format,test:sherif,test:knip,test:eslint,test:lib,test:types,test:build,build,test:attw",
     "test:ci": "nx run-many --targets=test:format,test:sherif,test:knip,test:eslint,test:lib,test:types,test:build,build,test:attw",