Disable share downloading when EnableDownloads is false.

Fixes https://github.com/navidrome/navidrome/pull/2246#issuecomment-1472341635

ui/src/share/ShareEdit.js

@@ -9,6 +9,7 @@ import {
 import { shareUrl } from '../utils'
 import { Link } from '@material-ui/core'
 import { DateField } from '../common'
+import config from '../config'
 
 export const ShareEdit = (props) => {
   const { id, basePath, hasCreate, ...rest } = props
@@ -20,7 +21,7 @@ export const ShareEdit = (props) => {
           {url}
         </Link>
         <TextInput source="description" />
-        <BooleanInput source="downloadable" />
+        {config.enableDownloads && <BooleanInput source="downloadable" />}
         <DateTimeInput source="expiresAt" />
         <TextInput source="contents" disabled />
         <TextInput source="format" disabled />