Vulkan: Rename redeferClears as restageDeferredClears This is a simple rename to better reflect implementation and has no functional changes. Bug: angleproject:8348 Change-Id: I53ce42e8bb14687a0dda167b8d79eba1eb357254 Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/4888691 Reviewed-by: Charlie Lao <cclao@google.com> Commit-Queue: mohan maiya <m.maiya@samsung.com> Reviewed-by: Shahbaz Youssefi <syoussefi@chromium.org>