Added state tracking back for images bound with glBindImageTexture
This fixes a bug where updating a texture with glTexSubImage2D would not
trigger a content update when the same image was re-used in a dispatch

Bug: angleproject:3887
Test: SimpleStateChangeTestES31.DispatchWithImageTextureTexSubImageThenDispatchAgain/ES3_1_Vulkan
Change-Id: I030ec52f1c470f9e9ff7c14f1c24fe213000a3ad
Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/1835943
Commit-Queue: Mohan Maiya <m.maiya@samsung.com>
Reviewed-by: Geoff Lang <geofflang@chromium.org>
Reviewed-by: Jamie Madill <jmadill@chromium.org>