LowerTypeTests: Stop creating inline bitset tests on 32-bit architectures.
Tests with a 64-bit inline bitset are not only unlikely to be beneficial
on 32-bit architectures but with ThinLTO we are unable to export them
correctly, resulting in a miscompile.
Reviewers: fmayer
Reviewed By: fmayer
Pull Request: https://github.com/llvm/llvm-project/pull/143458