refactor: #7090 for Stepper

packages/primevue/src/stepper/Stepper.vue

@@ -7,7 +7,6 @@
 </template>
 
 <script>
-import { UniqueComponentId } from '@primevue/core/utils';
 import BaseStepper from './BaseStepper.vue';
 
 export default {
@@ -17,21 +16,14 @@ export default {
     emits: ['update:value'],
     data() {
         return {
-            id: this.$attrs.id,
             d_value: this.value
         };
     },
     watch: {
-        '$attrs.id'(newValue) {
-            this.id = newValue || UniqueComponentId();
-        },
         value(newValue) {
             this.d_value = newValue;
         }
     },
-    mounted() {
-        this.id = this.id || UniqueComponentId();
-    },
     methods: {
         updateValue(newValue) {
             if (this.d_value !== newValue) {