[llvm] [ExceptionDemo] Transition example from MCJIT to ORC and fix compiling errors (PR #92504)

[LLVM Continuous Integration via llvm-commits]

llvm-ci wrote:

LLVM Buildbot has detected a new failure on builder `openmp-gcc-x86_64-linux-debian` running on `gribozavr4` while building `llvm` at step 6 "test-openmp".

Full details are available at: https://lab.llvm.org/buildbot/#/builders/70/builds/6368

<details>
<summary>Here is the relevant piece of the build log for the reference</summary>

```
Step 6 (test-openmp) failure: test (failure)
******************** TEST 'libomp :: tasking/issue-94260-2.c' FAILED ********************
Exit Code: -11

Command Output (stdout):
--
# RUN: at line 1
/b/1/openmp-gcc-x86_64-linux-debian/llvm.build/./bin/clang -fopenmp   -I /b/1/openmp-gcc-x86_64-linux-debian/llvm.build/runtimes/runtimes-bins/openmp/runtime/src -I /b/1/openmp-gcc-x86_64-linux-debian/llvm.src/openmp/runtime/test -L /b/1/openmp-gcc-x86_64-linux-debian/llvm.build/runtimes/runtimes-bins/openmp/runtime/src  -fno-omit-frame-pointer -I /b/1/openmp-gcc-x86_64-linux-debian/llvm.src/openmp/runtime/test/ompt /b/1/openmp-gcc-x86_64-linux-debian/llvm.src/openmp/runtime/test/tasking/issue-94260-2.c -o /b/1/openmp-gcc-x86_64-linux-debian/llvm.build/runtimes/runtimes-bins/openmp/runtime/test/tasking/Output/issue-94260-2.c.tmp -lm -latomic && /b/1/openmp-gcc-x86_64-linux-debian/llvm.build/runtimes/runtimes-bins/openmp/runtime/test/tasking/Output/issue-94260-2.c.tmp
# executed command: /b/1/openmp-gcc-x86_64-linux-debian/llvm.build/./bin/clang -fopenmp -I /b/1/openmp-gcc-x86_64-linux-debian/llvm.build/runtimes/runtimes-bins/openmp/runtime/src -I /b/1/openmp-gcc-x86_64-linux-debian/llvm.src/openmp/runtime/test -L /b/1/openmp-gcc-x86_64-linux-debian/llvm.build/runtimes/runtimes-bins/openmp/runtime/src -fno-omit-frame-pointer -I /b/1/openmp-gcc-x86_64-linux-debian/llvm.src/openmp/runtime/test/ompt /b/1/openmp-gcc-x86_64-linux-debian/llvm.src/openmp/runtime/test/tasking/issue-94260-2.c -o /b/1/openmp-gcc-x86_64-linux-debian/llvm.build/runtimes/runtimes-bins/openmp/runtime/test/tasking/Output/issue-94260-2.c.tmp -lm -latomic
# executed command: /b/1/openmp-gcc-x86_64-linux-debian/llvm.build/runtimes/runtimes-bins/openmp/runtime/test/tasking/Output/issue-94260-2.c.tmp
# note: command had no output on stdout or stderr
# error: command failed with exit status: -11

--

********************


```

</details>

https://github.com/llvm/llvm-project/pull/92504