iris: GfxBench5's Car Chase slow-clears LOD0 when using HIZ_CCS_WT
While analyzing GfxBench5's gl_4_off benchmark (for !11454 (merged)), I found that slow clears were used for LOD0 of a depth buffer which used HIZ_CCS_WT.
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While analyzing GfxBench5's gl_4_off benchmark (for !11454 (merged)), I found that slow clears were used for LOD0 of a depth buffer which used HIZ_CCS_WT.