test: update tsconfigs for library tyesting project

Author: alan-agius4

packages/angular_devkit/build_ng_packagr/test/ng-packaged/projects/lib/tsconfig.lib.json

@@ -3,13 +3,19 @@
   "compilerOptions": {
     "target": "es2015",
     "declaration": true,
+    "declarationMap": true,
     "inlineSources": true,
     "types": [],
     "lib": [
       "dom",
       "es2018"
     ]
   },
+  "angularCompilerOptions": {
+    "skipTemplateCodegen": true,
+    "strictMetadataEmit": true,
+    "enableResourceInlining": true
+  },
   "exclude": [
     "src/test.ts",
     "**/*.spec.ts"

packages/angular_devkit/build_ng_packagr/test/ng-packaged/projects/lib/tsconfig.lib.prod.json

@@ -1,9 +1,9 @@
 {
   "extends": "./tsconfig.lib.json",
+  "compilerOptions": {
+    "declarationMap": false
+  },
   "angularCompilerOptions": {
-    "skipTemplateCodegen": true,
-    "strictMetadataEmit": true,
-    "enableResourceInlining": true,
     "enableIvy": false
   }
 }