Use exact value comparison in caching related functions

(cherry picked from commit 9d7c6b26422e127719836944d8d473910190e7d4)

Source/Engine/Foliage/Foliage.cpp

@@ -1013,7 +1013,7 @@ bool UpdateFoliageDensityScaling(Actor* actor)
 void Foliage::SetGlobalDensityScale(float value)
 {
     value = Math::Saturate(value);
-    if (Math::NearEqual(value, GlobalDensityScale))
+    if (value == GlobalDensityScale)
         return;
 
     PROFILE_CPU();