Add plural formatting to a11y hint translation

Co-authored-by: surfdude29 <149612116+surfdude29@users.noreply.github.com>

src/view/com/composer/SelectMediaButton.tsx

@@ -485,10 +485,26 @@ export function SelectMediaButton({
       accessibilityHint={
         isNative
           ? _(
-              msg`Opens device gallery to select up to ${MAX_IMAGES} images, or a single video.`,
+              msg({
+                message: `Opens device gallery to select up to ${plural(
+                  MAX_IMAGES,
+                  {
+                    other: '# images',
+                  },
+                )}, or a single video.`,
+                comment: `Accessibility hint on native for button in composer to add images or a video to a post. Maximum number of images that can be selected is currently 4 but may change.`,
+              }),
             )
           : _(
-              msg`Opens device gallery to select up to ${MAX_IMAGES} images, or a single video or GIF.`,
+              msg({
+                message: `Opens device gallery to select up to ${plural(
+                  MAX_IMAGES,
+                  {
+                    other: '# images',
+                  },
+                )}, or a single video or GIF.`,
+                comment: `Accessibility hint on web for button in composer to add images, a video, or a GIF to a post. Maximum number of images that can be selected is currently 4 but may change.`,
+              }),
             )
       }
       style={a.p_sm}