[Glitch] Change wording from “Hide media” to “Hide image/images” in Web UI

Port 40d81620b0 to glitch-soc

Signed-off-by: Thibaut Girka <thib@sitedethib.com>

app/javascript/flavours/glitch/components/media_gallery.js

@@ -23,7 +23,7 @@ const messages = defineMessages({
     id: 'status.sensitive_toggle',
   },
   toggle_visible: {
-    defaultMessage: 'Hide media',
+    defaultMessage: 'Hide {number, plural, one {image} other {images}}',
     id: 'media_gallery.toggle_visible',
   },
   warning: {
@@ -368,7 +368,7 @@ class MediaGallery extends React.PureComponent {
         </button>
       );
     } else if (visible) {
-      spoilerButton = <IconButton title={intl.formatMessage(messages.toggle_visible)} icon='eye-slash' overlay onClick={this.handleOpen} />;
+      spoilerButton = <IconButton title={intl.formatMessage(messages.toggle_visible, { number: size })} icon='eye-slash' overlay onClick={this.handleOpen} />;
     } else {
       spoilerButton = (
         <button type='button' onClick={this.handleOpen} className='spoiler-button__overlay'>