Regression in lightmap UV unwrapping in godot 4.2.beta4

[LimaneGaya]

Godot version

4.2.beta4

System information

Windows 11, Godot 4.2.beta4, Forward +

Issue description

unwrapping UV in models imported shows error while it works fine in godot 4.1

Steps to reproduce

import model
extract meshes
place it in a scene
try to unwrap uv

Minimal reproduction project

lightmap beta4.zip

[YuriSizov]

This error was added on purpose in #83498. It's supposed to tell you about something that would fail the unwrapping later regardless. cc @SaracenOne

[AThousandShips]

Can you confirm that it worked correctly in 4.1? As in more than just it not showing a popup? Is it free of error messages and produces a valid result?

[LimaneGaya]

Yes it works fine in Godot_v4.1.3-stable

[AThousandShips]

Oh wait, it looks like the condition is invalid in the PR:

if (format & Mesh::ArrayFormat::ARRAY_FORMAT_NORMAL) {

Looks inverted

[AThousandShips]

I'll just throw together a fix

Edit: confirmed that it makes the error go away for the MRP