refactor: add required validation to quotation selection and enhance button disable logic in credit and debit note forms

src/pages/12_debit-note/FormPage.vue

@@ -987,7 +987,6 @@ onMounted(async () => {
           />
 
           <!-- #TODO add  openProductDialog at @add-product-->
-
           <ProductExpansion
             v-if="view === null"
             :readonly
@@ -1179,6 +1178,9 @@ onMounted(async () => {
 
           <SaveButton
             v-if="!readonly && pageState.mode === 'create'"
+            :disabled="
+              selectedWorkerItem.length === 0 && productService.length === 0
+            "
             @click="submit"
             :label="true ? $t('debitNote.label.submit') : $t('general.save')"
             :icon="