Condition "!parent_2d" is true. error for TileMap with bake_navigation=true and no Navigation2D parent

[kleonc]

Godot version

3.5.stable

System information

N/A

Issue description

TileMap with bake_navigation=true and no Navigation2D ancestor/parent (or non-Node2D node between them) results in errors:

E 0:00:00.509   get_relative_transform_to_parent: Condition "!parent_2d" is true. Returned: Transform2D()
  <C++ Source>  scene/2d/node_2d.cpp:356 @ get_relative_transform_to_parent()
E 0:00:00.519   get_relative_transform_to_parent: Condition "!parent_2d" is true. Returned: Transform2D()
  <C++ Source>  scene/2d/node_2d.cpp:356 @ get_relative_transform_to_parent()

Seems like a regression from #61996, cc @smix8.

Steps to reproduce

Add a TileMap and set bake_navigation to true.

Errors (on run / reparenting nodes etc. in the editor):

No errors:

Minimal reproduction project

No response

[akien-mga]

Fixed by #64013.