feat(dev-infra): allow local ng-dev configuration to error on invalid commit messages (#38784)

As part of the commit message conformance check, local commit message checks are
made to be warnings rather than failures. An additional local option is also in
place to allow for the commit message validation failures to be considered errors
instead.

PR Close #38784

dev-infra/commit-message/cli.ts

@@ -6,6 +6,7 @@
  * found in the LICENSE file at https://angular.io/license
  */
 import * as yargs from 'yargs';
+import {getUserConfig} from '../utils/config';
 
 import {info} from '../utils/console';
 
@@ -78,11 +79,17 @@ export function buildCommitMessageParser(localYargs: yargs.Argv) {
                 }
                 return file;
               },
+            },
+            'error': {
+              type: 'boolean',
+              description:
+                  'Whether invalid commit messages should be treated as failures rather than a warning',
+              default: !!getUserConfig().commitMessage?.errorOnInvalidMessage || !!process.env['CI']
             }
           },
           args => {
             const file = args.file || args['file-env-variable'] || '.git/COMMIT_EDITMSG';
-            validateFile(file);
+            validateFile(file, args.error);
           })
       .command(
           'validate-range', 'Validate a range of commit messages', {