chore(transactions): leave comment instead of breaking change

Author: ViktorSlavov

projects/igniteui-angular/migrations/update-12_1_0/index.spec.ts

@@ -722,7 +722,7 @@ public onBannerOpened(event: BannerEventArgs) {
         @Component({
             template: '',
             providers: [/* Injection token 'IgxGridTransaction' has been deprecated. Please refer to the update guide for more details. */
-/* { provide: IgxGridTransaction, useClass: IgxTransactionService } */]
+{ provide: IgxGridTransaction, useClass: IgxTransactionService }]
         })
         export class TransactionComponent {
             @ViewChild(IgxGridComponent, { read: IgxGridComponent })
@@ -757,7 +757,7 @@ public onBannerOpened(event: BannerEventArgs) {
             providers: [
                 { provider: A, useClass: AService },
                 /* Injection token 'IgxGridTransaction' has been deprecated. Please refer to the update guide for more details. */
-/* { provide: IgxGridTransaction, useClass: IgxTransactionService }, */
+{ provide: IgxGridTransaction, useClass: IgxTransactionService },
                 { provider: B, useClass: BService}
             ]
         })

projects/igniteui-angular/migrations/update-12_1_0/index.ts

@@ -122,7 +122,7 @@ export default (): Rule => (host: Tree, context: SchematicContext) => {
     if (content.indexOf(deprecatedToken) < 0) {
       continue;
     }
-    content = content.replace(matchExpr, `${providerWarnMsg}\n/* $1 */`);
+    content = content.replace(matchExpr, `${providerWarnMsg}\n$1`);
     host.overwrite(path, content);
   }