[vk] Remove improper check for image depth in texture cache.

When looking for existing images, ImageBase::TryFindBase checks the depth of the existing image to be greater than the layer of the base + depth of the candidate.
However the depth of images are not updated when cache were merged causing the lookup to fail.
This commit disables this faulty check to fix a critical memory leak that crashes the emulator in some games.

src/video_core/texture_cache/texture_cache.h

@@ -1426,6 +1426,7 @@ ImageId TextureCache<P>::JoinImages(const ImageInfo& info, GPUVAddr gpu_addr, DA
         if (solution) {
             gpu_addr = solution->gpu_addr;
             cpu_addr = solution->cpu_addr;
+            // TODO: properly update new_info.size.depth.
             new_info.resources = solution->resources;
             join_overlap_ids.push_back(overlap_id);
             join_copies_to_do.emplace_back(JoinCopy{false, overlap_id});

src/video_core/texture_cache/util.cpp

@@ -1216,10 +1216,10 @@ std::optional<SubresourceBase> FindSubresource(const ImageInfo& candidate, const
         return std::nullopt;
     }
     if (existing.type == ImageType::e3D) {
-        const u32 mip_depth = std::max(1U, existing.size.depth << base->level);
-        if (mip_depth < candidate.size.depth + base->layer) {
-            return std::nullopt;
-        }
+        // const u32 mip_depth = std::max(1U, existing.size.depth << base->level);
+        // if (mip_depth < candidate.size.depth + base->layer) {
+        //     return std::nullopt;
+        // }
     } else if (existing.resources.layers < candidate.resources.layers + base->layer) {
         return std::nullopt;
     }