Disable asynchronous primitives in DynamicScene

Due to #1487.

We can revisit it in the future when performance is better.  Since we create all the geometry up front anyway, this is a load time concern and should not become a usability issue.

Author: mramato

Source/DynamicScene/StaticGeometryColorBatch.js

@@ -61,7 +61,7 @@ define(['../Core/Color',
             var geometry = this.geometry.values;
             if (geometry.length > 0) {
                 primitive = new Primitive({
-                    asynchronous : true,
+                    asynchronous : false,
                     geometryInstances : geometry,
                     appearance : new this.appearanceType({
                         faceForward : true,

Source/DynamicScene/StaticGeometryPerMaterialBatch.js

@@ -76,7 +76,7 @@ define(['../Core/defined',
             }
             if (geometries.length > 0) {
                 primitive = new Primitive({
-                    asynchronous : true,
+                    asynchronous : false,
                     geometryInstances : geometries,
                     appearance : new this.appearanceType({
                         material : MaterialProperty.getValue(time, this.materialProperty, this.material),

Source/DynamicScene/StaticOutlineGeometryBatch.js

@@ -61,7 +61,7 @@ define(['../Core/Color',
             var geometry = this.geometry.values;
             if (geometry.length > 0) {
                 primitive = new Primitive({
-                    asynchronous : true,
+                    asynchronous : false,
                     geometryInstances : geometry,
                     appearance : new PerInstanceColorAppearance({
                         flat : true,