Add test for attrib rebinding from ARRAY_BUFFER to client. Failure was found in Dragonmania game, where on switching from ARRAY_BUFFER to client attrib pointer without updating the stride, ANGLE assumed no change in the pipeline. Bug: b/306472834 Change-Id: I30f7a478ed62f4356317156b50558166cb7c4c01 Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/4977168 Reviewed-by: Charlie Lao <cclao@google.com> Reviewed-by: Shahbaz Youssefi <syoussefi@chromium.org> Commit-Queue: Charlie Lao <cclao@google.com>