tweak(codegen): set VAR_STRING as an unsupported type for OAL

[AvarianKnight]

Goal of this PR

Allow VAR_STRING to be used on RDR when using OAL

How is this PR achieving the goal

Marks it as 'unsupported' so it wont be generated as a supported native for OAL

This PR applies to the following area(s)

RedM

Successfully tested on

This was only tested that it doesn't add to the map in NativesRDR.h

Game builds: ..

Platforms: Windows, Linux

Checklist

• [ ] Code compiles and has been tested successfully.
• [x] Code explains itself well and/or is documented.
• [x] My commit message explains what the changes do and what they are for.
• [x] No extra compilation warnings are added by these changes.

Fixes issues

Fixes the issue @outsider31000 reported

[outsider31000]

didnt know that list existed. thanks for this ~does this mean VarString will still work right? just wont be considered by the OAL?~

[AvarianKnight]

didnt know that list existed. does this mean VarString will still work right? just wont be considered by the OAL?

Yes, it'll fallback to the normal NativeInvoke.

[outsider31000]

yes thanks, I read the description wrong.

[outsider31000]

someone merge this please.