Fix bug in Fully Connected F32 unit tests

PiperOrigin-RevId: 272750791
diff --git a/test/fully-connected-operator-tester.h b/test/fully-connected-operator-tester.h
index b6eddf4..f5b2cd6 100644
--- a/test/fully-connected-operator-tester.h
+++ b/test/fully-connected-operator-tester.h
@@ -243,8 +243,8 @@
       }
 
       // Compute clamping parameters.
-      const int32_t accumulated_min = *std::min_element(output_ref.cbegin(), output_ref.cend());
-      const int32_t accumulated_max = *std::max_element(output_ref.cbegin(), output_ref.cend());
+      const float accumulated_min = *std::min_element(output_ref.cbegin(), output_ref.cend());
+      const float accumulated_max = *std::max_element(output_ref.cbegin(), output_ref.cend());
 
       const float output_min = accumulated_min + (accumulated_max - accumulated_min) / 255.0f * float(qmin());
       const float output_max = accumulated_max - (accumulated_max - accumulated_min) / 255.0f * float(255 - qmax());