fix(eslint-plugin): [consistent-type-assertions] allow default assertionStyle option (typescript-eslint#10512)

Author: scottohara

packages/eslint-plugin/src/rules/consistent-type-assertions.ts

@@ -82,7 +82,6 @@ export default createRule<Options, MessageIds>({
                 enum: ['allow', 'allow-as-parameter', 'never'],
               },
             },
-            required: ['assertionStyle'],
           },
         ],
       },