Reduce measure cache size to 8

Summary:
@public

Reduces measure cache size to a number that is enough for 95% of nodes, according to our (FB-internal) measurements.

Node size: 776b -> 584b

Reviewed By: SidharthGuglani

Differential Revision: D15183567

fbshipit-source-id: 9ae8cc78074271a015e7618b931ba0356de87a0c

ReactCommon/yoga/yoga/Yoga-internal.h

@@ -91,9 +91,9 @@ struct YGCachedMeasurement {
   }
 };
 
-// This value was chosen based on empiracle data. Even the most complicated
-// layouts should not require more than 16 entries to fit within the cache.
-#define YG_MAX_CACHED_RESULT_COUNT 16
+// This value was chosen based on empirical data:
+// 98% of analyzed layouts require less than 8 entries.
+#define YG_MAX_CACHED_RESULT_COUNT 8
 
 namespace facebook {
 namespace yoga {