Fixed disable options for SelectInput

frontend/src/Components/Form/MonitorAlbumsSelectInput.js

@@ -25,7 +25,7 @@ function MonitorAlbumsSelectInput(props) {
   if (includeMixed) {
     values.unshift({
       key: 'mixed',
-      value: '(Mixed)',
+      value: `(${translate('Mixed')})`,
       isDisabled: true
     });
   }

frontend/src/Components/Form/SelectInput.js

@@ -52,6 +52,7 @@ class SelectInput extends Component {
             const {
               key,
               value: optionValue,
+              isDisabled: optionIsDisabled = false,
               ...otherOptionProps
             } = option;
 
@@ -59,6 +60,7 @@ class SelectInput extends Component {
               <option
                 key={key}
                 value={key}
+                disabled={optionIsDisabled}
                 {...otherOptionProps}
               >
                 {typeof optionValue === 'function' ? optionValue() : optionValue}