[Glitch] Make media_gallery.toggle_visible less confusing to translate

Port 978d92a628 to glitch-soc

Co-authored-by: Eugen Rochko <eugen@zeonfederated.com>
Signed-off-by: Claire <claire.github-309c@sitedethib.com>

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

@@ -24,7 +24,7 @@ const messages = defineMessages({
     id: 'status.sensitive_toggle',
   },
   toggle_visible: {
-    defaultMessage: 'Hide {number, plural, one {image} other {images}}',
+    defaultMessage: '{number, plural, one {Hide image} other {Hide images}}',
     id: 'media_gallery.toggle_visible',
   },
   warning: {