build: update formatting ignore controls to be done via prettierignore (#32507)

Author: josephperrott

.ng-dev/format.mts

@@ -6,7 +6,5 @@ import {FormatConfig} from '@angular/ng-dev';
  */
 export const format: FormatConfig = {
   buildifier: true,
-  prettier: {
-    matchers: ['**/*.{js,ts,mts,mjs,json}'],
-  },
+  prettier: true,
 };

.prettierignore

@@ -13,3 +13,7 @@ src/material/schematics/ng-update/test-cases/**/*_input.ts
 src/material/schematics/ng-update/test-cases/**/*_expected_output.ts
 
 pnpm-lock.yaml
+
+
+# TODO: Enable formatting on markdown files
+**/*.md