Correct SCRIPT_FUNCTION callback layout and map packed execute arguments

[Quantumyilmaz]

Summary

• correct the Starfield SCRIPT_FUNCTION callback offsets
• map the runtime selector at +0x38 and the alternate packed-arguments execute ABI
• move compileFunction to +0x40, conditionFunction to +0x48, and the two tail flags to +0x50/+0x51
• add explicit layout assertions while preserving the verified 0x58 total size

RE notes

• descriptor construction and an independent copy path both establish the recovered field positions
• execute dispatchers branch on the byte at +0x38 and call the function at +0x30 using either the legacy eight-argument ABI or ExecuteFunctionArgs&
• compiler and condition dispatchers directly load their callbacks from +0x40 and +0x48
• the runtime directly consumes invalidatesCellList at +0x51
• compile-callback parameter semantics remain intentionally unmapped as void*

Validation

• direct Starfield 1.16.244 construction, copy, and call-site disassembly
• repo clang-format and whitespace checks
• MSVC C++23 layout probe and class-layout report
• full CommonLibSF MSVC debug and release builds

QTR internal review draft. This has not been submitted upstream.

Integration check

All four QTR draft branches cherry-pick together cleanly, and the combined tree passes full CommonLibSF MSVC debug and release builds.