Mark string for translation and add context (#10805)

src/components/images/Gallery/index.tsx

@@ -523,7 +523,11 @@ function GalleryImage({
                   a.font_bold,
                   largeAltBadge ? a.text_xs : {fontSize: 8},
                 ]}>
-                {index + 1}/{imageCount}
+                <Trans
+                  context="gallery-badge-image-position-numbers"
+                  comment="Badge showing the current image position out of the total number of images in a gallery.">
+                  {index + 1}/{imageCount}
+                </Trans>
               </Text>
             </View>
           ) : null}

src/screens/Messages/JoinRequest.tsx

@@ -127,7 +127,9 @@ export function JoinRequest({setScreenState}: Props) {
                         a.leading_snug,
                         t.atoms.text_contrast_medium,
                       ]}>
-                      <Trans comment="The number of active group chat members out of the total number allowed.">
+                      <Trans
+                        context="group-chat-member-count"
+                        comment="The number of active group chat members out of the total number allowed.">
                         {data.joinLinkPreviews[0].memberCount}/
                         {data.joinLinkPreviews[0].memberLimit}
                       </Trans>