Correct disabled method

Author: Kevin

src/fields/core/fieldChecklist.vue

@@ -3,7 +3,7 @@
 .listbox.form-control(v-if="schema.listBox", :disabled="disabled")
 .list-row(v-for="item in items", :class="{'is-checked': isItemChecked(item)}")
 label
-input(:id="getFieldID(schema, true)", type="checkbox", :checked="isItemChecked(item)", :disabled="isItemChecked(item)", @change="onChanged($event, item)", :name="getInputName(item)", v-attributes="'input'")
+input(:id="getFieldID(schema, true)", type="checkbox", :checked="isItemChecked(item)", :disabled="isItemDisabled(item)", @change="onChanged($event, item)", :name="getInputName(item)", v-attributes="'input'")
 | {{ getItemName(item) }}
 
 .combobox.form-control(v-if="!schema.listBox", :disabled="disabled")
@@ -14,7 +14,7 @@
 .dropList
 .list-row(v-if="comboExpanded", v-for="item in items", :class="{'is-checked': isItemChecked(item)}")
 label
-input(:id="getFieldID(schema, true)", type="checkbox", :checked="isItemChecked(item)", :disabled="isItemChecked(item)", @change="onChanged($event, item)", :name="getInputName(item)", v-attributes="'input'")
+input(:id="getFieldID(schema, true)", type="checkbox", :checked="isItemChecked(item)", :disabled="isItemDisabled(item)", @change="onChanged($event, item)", :name="getInputName(item)", v-attributes="'input'")
 | {{ getItemName(item) }}
 </template>