fix(@schematics/angular): replace vscode launch type from pwa-chrome to chrome

The former is deprecated.

(cherry picked from commit f50dc01)

Author: alan-agius4

Diff for: packages/schematics/angular/workspace/files/__dot__vscode/launch.json.template

@@ -4,7 +4,7 @@
   "configurations": [
     {
       "name": "ng serve",
-      "type": "pwa-chrome",
+      "type": "chrome",
       "request": "launch",
       "preLaunchTask": "npm: start",
       "url": "http://localhost:4200/"