1455 Spring randomly displays as if anti-aliasing is disabled

Spring sometimes launches games as if AA is disabled. The easiest way to tell is that icons look terrible, as icons looking terrible is a well known byproduct of having no AA. Pixels can be inspected to see that AA is at fault.

Once the bug happens, every subsequent game launch will behave as if it has no AA. Modifying AA settings via lua has no effect. The bug may go away when spring is restarted, but sometimes it doesn't. Or maybe the bug just has some chance to occur on first launch,

[infolog(20).txt](https://github.com/beyond-all-reason/spring/files/10357270/infolog.20.txt)

AA:

No AA:

Start by reviewing infolog.20.txt and reproducing the first-launch behavior with anti-aliasing enabled, comparing the provided AA and No AA images. Trace when subsequent launches stop honoring AA settings; done means game launches consistently render anti-aliased icons and Lua AA changes take effect.

Written by the indexing model from the issue text.