fixup! Avoid copying memory on snapshot restore, when possible

Silence spurious panic warning

Signed-off-by: Lucy Menon <168595099+syntactically@users.noreply.github.com>

Author: syntactically

src/hyperlight_host/src/mem/shared_mem.rs

@@ -2033,6 +2033,7 @@ impl ReadonlySharedMemory {
         region_type: MemoryRegionType,
     ) -> MemoryRegion {
         if region_type != MemoryRegionType::Snapshot {
+            #[allow(clippy::panic)]
             // This will not ever actually panic: the only place this
             // is called is HyperlightVm::update_snapshot_mapping,
             // which always calls it with the Snapshot region type.