[C++][Gandiva] LLVM JIT upgrade causing test and build failures

[lriggs]

Describe the bug, including details regarding any error messages, version, and platform.

#37848 upgraded the JIT compiler for LLVM/Gandiva code which presented linking errors with newer version of LLVM. Some Gandiva tests were disabled, and here at Dremio I am running into the same linking problem when trying to build with an updated Arrow library. LLVM devs are aware of the linking problem, which seems to be an issue with the package exports, but there is no fix yet. In the meantime I'm proposing reverting the JIT upgrade since it was a maintenance item and not strictly necessary at this time.

More discussion in apache/arrow-java#63.

Component(s)

C++, Gandiva