shader: preserve wave-wide vector-store completion before publication

src/graphics/shader/recompiler/backend/spirv/spirvEmitterProgram.cpp

@@ -315,6 +315,7 @@ void EmitBlock(ValueEmitContext& ctx, const IR::Block* block, EmitInstruction&&
 			auto& lane          = half == 0 ? ctx : *ctx.other_half;
 			ctx.state.lane_half = half;
 			if (half == 0 || (inst.GetOpcode() != IR::ValueOpcode::Barrier &&
+			                  inst.GetOpcode() != IR::ValueOpcode::StoreCompletion &&
 			                  inst.GetOpcode() != IR::ValueOpcode::MeshAllocate)) {
 				emit_instruction(lane, inst);
 			}