Prefer exponential growth in PooledArrayBuilder<T>.SetCapacityIfLarger

Fixes #12019

Author: DustinCampbell

src/Shared/Microsoft.AspNetCore.Razor.Utilities.Shared/PooledObjects/PooledArrayBuilder`1.cs

@@ -255,15 +255,19 @@ public void SetCapacityIfLarger(int value)
     {
         if (value > Capacity)
         {
+            // For pooled arrays, we prefer exponential growth minimize the number of times
+            // the internal array has to be resized.
+            var newCapacity = Math.Max(value, Capacity * 2);
+
             if (TryGetBuilder(out var builder))
             {
-                Debug.Assert(value > builder.Capacity);
-                builder.Capacity = value;
+                Debug.Assert(newCapacity > builder.Capacity);
+                builder.Capacity = newCapacity;
             }
             else
             {
-                Debug.Assert(value > (_capacity ?? InlineCapacity));
-                _capacity = value;
+                Debug.Assert(newCapacity > (_capacity ?? InlineCapacity));
+                _capacity = newCapacity;
             }
         }
     }