ShroudRenderer, fix, render Shroud if fog disabled.

[anvilvapre]

Closes #20243.

• Fix: only check for (visible under) Explored not both Visible or Explored.
• Fix: shroud covered == not explored, visible may still be true when fog is disabled
• Optimization: fogEnabled over FogEnabled

[PunkPun]

LGTM.
This also fixes another regression that I just noticed. When you use /visibility command it no longer explores the map permanently. This behaviour matches last release

[MustaphaTR]

Can confirm that fixes #20243. Didn't notice any other issues while testing.

[dragunoff]

This doesn't seem correct (see minimap):

To reproduce:

1. Start a game with "Explored Map: On" and "Fog of War: Off"
2. Enable "all" cheat.
3. Build a radar dome and a power plant.
4. Disable "all" cheat.
5. Observe minimap.

[anvilvapre]

Can only validate myself in the evening. But this may fix it. Untested. Same issue as in shroud renderer, but now in radar widget.

[anvilvapre]

Assuming the issue was that the radar/minimap did not show the shroud. I can confirm this has been fixed.

You mentioned: Start a game with "Explored Map: On" and "Fog of War: Off". But I assume you also later pressed the "Reset shroud" button, or had explored map off? I.e. how else could your screenshot have a shroud in the main view?

[dragunoff]

Assuming the issue was that the radar/minimap did not show the shroud. I can confirm this has been fixed.

You mentioned: Start a game with "Explored Map: On" and "Fog of War: Off". But I assume you also later pressed the "Reset shroud" button, or had explored map off? I.e. how else could your screenshot have a shroud in the main view?

I used the /all cheat. I guess it resets shroud when disabled.

[Smittytron]

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