docs: fix example "testing" app compilation (#30427)

PR Close #30427

aio/tools/examples/shared/boilerplate/testing/src/tsconfig.app.json

@@ -0,0 +1,22 @@
+{
+  "extends": "../tsconfig.json",
+  "compilerOptions": {
+    "outDir": "../out-tsc/app",
+    "types": []
+  },
+  "exclude": [
+    "test.ts",
+    "**/*.spec.ts",
+    "**/*.avoid.ts",
+    "**/*.0.ts",
+    "**/*.1.ts",
+    "**/*.1b.ts",
+    "**/*.2.ts",
+    "**/*.3.ts",
+    "**/*.4.ts",
+    "**/*.5.ts",
+    "**/*.6.ts",
+    "**/*.7.ts",
+    "**/testing"
+  ]
+}

aio/tools/examples/shared/boilerplate/testing/src/tsconfig.spec.json

@@ -0,0 +1,19 @@
+{
+  "extends": "../tsconfig.json",
+  "compilerOptions": {
+    "outDir": "../out-tsc/spec",
+    "types": [
+      "jasmine",
+      "node"
+    ]
+  },
+  "files": [
+    "test.ts",
+    "polyfills.ts"
+  ],
+  "include": [
+    "**/*.spec.ts",
+    "**/*.d.ts",
+    "**/testing"
+  ]
+}