[util] Fix Tomb Raider: Legend flicking result from #4389

[qinlili23333]

This should fix #4319 .
But I'm not sure whether it will bring negative effect to TRA and TRU, although it should also fix them due to similar engine implementation.
I don't own TRA or TRU, so need someone own them to test them.

[Blisto91]

If we want to do this then Legends should be split out in to its own entry yes. The issue only happens with the "Next Generation Content" option which the other two games don't have.
Also we'll have to test to make sure it doesn't seemingly regress anything else on the big vendors. E.g. AMD and Nvidia

[qinlili23333]

I have split Legend to dedicated one.

I have tested on Nvidia RTX 4080 Laptop (565.90, Windows 23H2) and Intel Xe 80eu (101.5768, Windows 24H2), works perfect.

Need someone to test it on AMD (and Intel on Linux) before merge, that's why I put it as a draft.

PS: The game also has a retail version in China, executable named trlchn.exe. But this retail version is protected with Starforce (apparently currently cannot play on modern systems). Should we also add this executable name into config? (Maybe someday there will be some project similar to SafeDiscShim that can restore Starforce function as normal on modern systems?)

[WinterSnowfall]

Since the former default value was "True", why not use that here?

[qinlili23333]

Superseded by #4442