Vulkan: Add test for midRenderPass clear for MSRTT This adds a test that demonstrate the bug with mid render pass clear of depth buffer with multisample render to texture emulation code path. This bug was seen in lord_of_heros. Bug: b/309355117 Change-Id: I0217baf77f74372b8d24e3321b9a0b727a6690ca Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/5353371 Reviewed-by: mohan maiya <m.maiya@samsung.com> Reviewed-by: Shahbaz Youssefi <syoussefi@chromium.org> Commit-Queue: Shahbaz Youssefi <syoussefi@chromium.org>