Add test of occlusion queries that span multiple render passes

[etang-cw]

The vulkan spec indicates that occlusion queries can span multiple render passes as long as they start and end outside of any render pass:

A query must either begin and end inside the same subpass of a render pass instance, or must both begin and end outside of a render pass instance (i.e. contain entire render pass instances).

However there were no tests to verify this worked, and MoltenVK fails to properly implement this.

[CLAassistant]

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