Hierarchical identifiers for nested structures do not work properly

[nblei]

With veryl 0.7.2

module foo {
    struct bar {
        baz: logic,
    }

    struct baz {
        a: bar,
    }

    var g: baz;

    assign g.a     = 1'b0;
    assign g.a.baz = 1'b0;

}

$ veryl check

Error:   × veryl check failed

Error: unknown_member (link)

  × "a" doesn't have member "baz"
    ╭─[temp/heirarchy_error/src/foo.veryl:12:1]
 12 │     assign g.a     = 1'b0;
 13 │     assign g.a.baz = 1'b0;
    ·            ┬
    ·            ╰── Error location
 14 │
    ╰────
  help: