Revert "chore: 🤖 (upgrade) upgrade to Angular 12"

This reverts commit da6e922

Author: nivekcode

angular.json

@@ -45,6 +45,7 @@
         "build": {
           "builder": "@angular-devkit/build-angular:browser",
           "options": {
+            "aot": true,
             "outputPath": "dist/ng-sortgrid-demo",
             "index": "projects/ng-sortgrid-demo/src/index.html",
             "main": "projects/ng-sortgrid-demo/src/main.ts",
@@ -59,13 +60,7 @@
               "projects/ng-sortgrid/src/lib/ngsg.css",
               "node_modules/@fortawesome/fontawesome-free/css/all.css"
             ],
-            "scripts": [],
-            "vendorChunk": true,
-            "extractLicenses": false,
-            "buildOptimizer": false,
-            "sourceMap": true,
-            "optimization": false,
-            "namedChunks": true
+            "scripts": []
           },
           "configurations": {
             "production": {
@@ -80,6 +75,7 @@
               "sourceMap": false,
               "extractCss": true,
               "namedChunks": false,
+              "aot": true,
               "extractLicenses": true,
               "vendorChunk": false,
               "buildOptimizer": true,
@@ -95,8 +91,7 @@
                 }
               ]
             }
-          },
-          "defaultConfiguration": ""
+          }
         },
         "serve": {
           "builder": "@angular-devkit/build-angular:dev-server",