[clang] [Clang][test] Add bytecode interpreter tests for floating comparison functions (PR #104703)

[Mital Ashok via cfe-commits]

MitalAshok wrote:

@tbaederr I've basically just copied over the tests from the other file.  
There's no other quad-precision (`__float128`) tests so they were removed.  
Do these need to be rewritten in a C++ style? (i.e., replace the macros with template functions)


https://github.com/llvm/llvm-project/pull/104703