Fix using runtime.NewArrayBuffer

After the templating changes calling `NewArrayBuffer` will make an
object but will set it's prototype to nil.

This change uses the new function call that will create the prototype if
not created yet.

It also changes in two other places where it seemed like it was missed.

builtin_typedarrays.go

@@ -510,7 +510,7 @@ func (r *Runtime) typedArrayProto_filter(call FunctionCall) Value {
 			}
 		}
 		c := r.speciesConstructorObj(o, ta.defaultCtor)
-		ab := r._newArrayBuffer(r.global.ArrayBufferPrototype, nil)
+		ab := r._newArrayBuffer(r.getArrayBufferPrototype(), nil)
 		ab.data = buf
 		kept := r.toConstructor(ta.defaultCtor)([]Value{ab.val}, ta.defaultCtor)
 		if c == ta.defaultCtor {
@@ -1215,7 +1215,7 @@ func (r *Runtime) typedArray_of(call FunctionCall) Value {
 }
 
 func (r *Runtime) allocateTypedArray(newTarget *Object, length int, taCtor typedArrayObjectCtor, proto *Object) *typedArrayObject {
-	buf := r._newArrayBuffer(r.global.ArrayBufferPrototype, nil)
+	buf := r._newArrayBuffer(r.getArrayBufferPrototype(), nil)
 	ta := taCtor(buf, 0, length, r.getPrototypeFromCtor(newTarget, nil, proto))
 	if length > 0 {
 		buf.data = allocByteSlice(length * ta.elemSize)

typedarrays.go

@@ -117,7 +117,7 @@ func (a ArrayBuffer) Detached() bool {
 // using this typed array will result in unaligned access which may cause performance degradation or runtime panics
 // on some architectures or configurations.
 func (r *Runtime) NewArrayBuffer(data []byte) ArrayBuffer {
-	buf := r._newArrayBuffer(r.global.ArrayBufferPrototype, nil)
+	buf := r._newArrayBuffer(r.getArrayBufferPrototype(), nil)
 	buf.data = data
 	return ArrayBuffer{
 		buf: buf,