VolumeVerifier: Make high severity "too small" hide low severity "too small"

Source/Core/DiscIO/VolumeVerifier.cpp

@@ -780,18 +780,9 @@ void VolumeVerifier::CheckDiscSize(const std::vector<Partition>& partitions)
           normal_size = DL_DVD_SIZE;
 
         if (size < normal_size)
-        {
-          AddProblem(
-              Severity::Low,
-              Common::GetStringT(
-                  "This disc image has an unusual size. This will likely make the emulated "
-                  "loading times longer. You will likely be unable to share input recordings "
-                  "and use NetPlay with anyone who is using a good dump."));
-        }
+          m_smaller_than_expected = true;
         else
-        {
           AddProblem(Severity::Low, Common::GetStringT("This disc image has an unusual size."));
-        }
       }
     }
   }
@@ -1323,6 +1314,14 @@ void VolumeVerifier::Finish()
                                "to merge them into one file.");
     AddProblem(Severity::High, std::move(text));
   }
+  else if (m_smaller_than_expected)
+  {
+    AddProblem(Severity::Low,
+               Common::GetStringT(
+                   "This disc image has an unusual size. This will likely make the emulated "
+                   "loading times longer. You will likely be unable to share input recordings "
+                   "and use NetPlay with anyone who is using a good dump."));
+  }
 
   for (auto [partition, blocks] : m_block_errors)
   {

Source/Core/DiscIO/VolumeVerifier.h

@@ -200,6 +200,7 @@ private:
 
   u64 m_biggest_referenced_offset = 0;
   u64 m_biggest_verified_offset = 0;
+  bool m_smaller_than_expected = false;
 
   bool m_started = false;
   bool m_done = false;