Handle small cover better (#5815)

(cherry picked from commit ab036312a488650279bb5dba18550490e7524b15)

app/src/main/java/eu/kanade/tachiyomi/ui/manga/info/MangaFullCoverDialog.kt

@@ -63,8 +63,11 @@ class MangaFullCoverDialog : DialogController {
             menu?.findItem(R.id.action_edit_cover)?.isVisible = manga?.favorite ?: false
         }
 
-        binding?.fullCover?.setOnClickListener {
+        binding?.fullCover?.apply {
-            dialog?.dismiss()
+            setOnClickListener {
+                dialog?.dismiss()
+            }
+            setMinimumDpi(45)
         }
         setImage(manga)