fix(fork-types): update fulu->gloas upgrade to use direct allocator/pool

After the BaseTreeView removal refactor (ce6370e), ContainerTreeView
exposes allocator and pool directly. The fulu->gloas upgrade path still
used the old state.base_view.allocator pattern.

Author: GrapeBaBa

src/fork_types/any_beacon_state.zig

@@ -965,8 +965,8 @@ pub const AnyBeaconState = union(ForkSeq) {
                 .gloas = try populateFields(
                     ct.fulu.BeaconState,
                     ct.gloas.BeaconState,
-                    state.base_view.allocator,
-                    state.base_view.pool,
+                    state.allocator,
+                    state.pool,
                     state,
                 ),
             },