GS/HW: Allow preload if FBW = 0 on small draw

pcsx2/GS/Renderers/HW/GSTextureCache.cpp

@@ -2408,8 +2408,9 @@ bool GSTextureCache::PreloadTarget(GIFRegTEX0 TEX0, const GSVector2i& size, cons
 	const GSLocalMemory::psm_t& psm_s = GSLocalMemory::m_psm[TEX0.PSM];
 	const bool supported_fmt = !GSConfig.UserHacks_DisableDepthSupport || psm_s.depth == 0;
 	std::optional<bool> hw_clear;
+	const bool valid_draw_size = TEX0.TBW > 0 || (psm_s.pgs.x >= size.x && psm_s.pgs.y >= size.y);
 
-	if (TEX0.TBW > 0 && supported_fmt)
+	if (valid_draw_size && supported_fmt)
 	{
 		const GSVector4i newrect = GSVector4i::loadh(size);
 		const u32 rect_end = GSLocalMemory::GetUnwrappedEndBlockAddress(TEX0.TBP0, TEX0.TBW, TEX0.PSM, newrect);