x86_32 is not a commonly used architecture anymore, so it doesn't make much sense to include it by default anymore.
For reference, the Steam hardware survey no longer reports any 32-bit versions of Windows, macOS, or Linux. Windows 7 64-bit is currently 0.15% of Steam users, so presumably, 32-bit of any version of Windows is less than that. Windows 11 doesn't even have a 32-bit variant at all anymore.
We still build x86_32 on CI, to be sure that it will continue to work if someone wants to checkout Lime and build manually.