Add test to only share images. Other media not supported atm

amethyst/src/main/java/com/vitorpamplona/amethyst/ui/components/ZoomableContentView.kt

@@ -752,11 +752,13 @@ fun ShareImageAction(
             )
         }
 
+        mimeType?.let {
+            if (mimeType.startsWith("image")) {
                 val context = LocalContext.current
                 videoUri?.let {
                     if (videoUri.isNotEmpty()) {
                         DropdownMenuItem(
-                    text = { Text("Share media...") },
+                            text = { Text("Share image...") },
                             onClick = {
                                 ShareHelper.shareImageFromUrl(context, videoUri)
 
@@ -767,6 +769,8 @@ fun ShareImageAction(
                 }
             }
         }
+    }
+}
 
 private suspend fun verifyHash(content: MediaUrlContent): Boolean? {
     if (content.hash == null) return null