BaseAnchorForAttachmentsOnly download prop type mismatch

the prop was meant to be and is used like an object: 22fe126

src/components/AnchorForAttachmentsOnly/BaseAnchorForAttachmentsOnly.js

@@ -22,15 +22,17 @@ const propTypes = {
     onPressOut: PropTypes.func,
 
     /** If a file download is happening */
-    download: PropTypes.bool,
+    download: PropTypes.shape({
+        isDownloading: PropTypes.bool.isRequired,
+    }),
 
     ...anchorForAttachmentsOnlyPropTypes,
 };
 
 const defaultProps = {
     onPressIn: undefined,
     onPressOut: undefined,
-    download: false,
+    download: {isDownloading: false},
     ...anchorForAttachmentsOnlyDefaultProps,
 };