fix(template): use locally installed schema for app.json (#2790)

Author: tido64

packages/app/example/app.json

@@ -1,5 +1,5 @@
 {
-  "$schema": "https://raw.githubusercontent.com/microsoft/react-native-test-app/trunk/schema.json",
+  "$schema": "./node_modules/react-native-test-app/schema.json",
   "name": "Example",
   "displayName": "Example",
   "components": [

packages/app/test/embed-manifest/fixtures.mts

@@ -1,6 +1,5 @@
 export const simple = {
-  $schema:
-    "https://raw.githubusercontent.com/microsoft/react-native-test-app/trunk/schema.json",
+  $schema: "./node_modules/react-native-test-app/schema.json",
   name: "Example",
   displayName: "Template",
   version: "1.0",

packages/example-macos/app.json

@@ -1,5 +1,5 @@
 {
-  "$schema": "https://raw.githubusercontent.com/microsoft/react-native-test-app/trunk/schema.json",
+  "$schema": "./node_modules/react-native-test-app/schema.json",
   "name": "Example",
   "displayName": "Example",
   "components": [

packages/example-windows/app.json

@@ -1,5 +1,5 @@
 {
-  "$schema": "https://raw.githubusercontent.com/microsoft/react-native-test-app/trunk/schema.json",
+  "$schema": "./node_modules/react-native-test-app/schema.json",
   "name": "Example",
   "displayName": "Example",
   "components": [