[clang] [clang][Interp] Fix function pointer callexpr eval order (PR #101821)

[LLVM Continuous Integration via cfe-commits]

llvm-ci wrote:

LLVM Buildbot has detected a new failure on builder `clang-aarch64-sve-vls` running on `linaro-g3-02` while building `clang` at step 7 "ninja check 1".

Full details are available at: https://lab.llvm.org/buildbot/#/builders/143/builds/1240

Here is the relevant piece of the build log for the reference:
```
Step 7 (ninja check 1) failure: stage 1 checked (failure)
******************** TEST 'lit :: googletest-timeout.py' FAILED ********************
Exit Code: 1

Command Output (stdout):
--
# RUN: at line 9
not env -u FILECHECK_OPTS "/usr/bin/python3.8" /home/tcwg-buildbot/worker/clang-aarch64-sve-vls/llvm/llvm/utils/lit/lit.py -j1 --order=lexical -v Inputs/googletest-timeout    --param gtest_filter=InfiniteLoopSubTest --timeout=1 > /home/tcwg-buildbot/worker/clang-aarch64-sve-vls/stage1/utils/lit/tests/Output/googletest-timeout.py.tmp.cmd.out
# executed command: not env -u FILECHECK_OPTS /usr/bin/python3.8 /home/tcwg-buildbot/worker/clang-aarch64-sve-vls/llvm/llvm/utils/lit/lit.py -j1 --order=lexical -v Inputs/googletest-timeout --param gtest_filter=InfiniteLoopSubTest --timeout=1
# .---command stderr------------
# | lit.py: /home/tcwg-buildbot/worker/clang-aarch64-sve-vls/llvm/llvm/utils/lit/lit/main.py:72: note: The test suite configuration requested an individual test timeout of 0 seconds but a timeout of 1 seconds was requested on the command line. Forcing timeout to be 1 seconds.
# `-----------------------------
# RUN: at line 11
FileCheck --check-prefix=CHECK-INF < /home/tcwg-buildbot/worker/clang-aarch64-sve-vls/stage1/utils/lit/tests/Output/googletest-timeout.py.tmp.cmd.out /home/tcwg-buildbot/worker/clang-aarch64-sve-vls/stage1/utils/lit/tests/googletest-timeout.py
# executed command: FileCheck --check-prefix=CHECK-INF /home/tcwg-buildbot/worker/clang-aarch64-sve-vls/stage1/utils/lit/tests/googletest-timeout.py
# RUN: at line 16
not env -u FILECHECK_OPTS "/usr/bin/python3.8" /home/tcwg-buildbot/worker/clang-aarch64-sve-vls/llvm/llvm/utils/lit/lit.py -j1 --order=lexical -v Inputs/googletest-timeout   --param gtest_filter=InfiniteLoopSubTest  --param set_timeout=1   > /home/tcwg-buildbot/worker/clang-aarch64-sve-vls/stage1/utils/lit/tests/Output/googletest-timeout.py.tmp.cfgset.out
# executed command: not env -u FILECHECK_OPTS /usr/bin/python3.8 /home/tcwg-buildbot/worker/clang-aarch64-sve-vls/llvm/llvm/utils/lit/lit.py -j1 --order=lexical -v Inputs/googletest-timeout --param gtest_filter=InfiniteLoopSubTest --param set_timeout=1
# .---command stderr------------
# | Traceback (most recent call last):
# |   File "/home/tcwg-buildbot/worker/clang-aarch64-sve-vls/llvm/llvm/utils/lit/lit/formats/googletest.py", line 304, in post_process_shard_results
# |     testsuites = json.load(f)["testsuites"]
# |   File "/usr/lib/python3.8/json/__init__.py", line 293, in load
# |     return loads(fp.read(),
# |   File "/usr/lib/python3.8/json/__init__.py", line 357, in loads
# |     return _default_decoder.decode(s)
# |   File "/usr/lib/python3.8/json/decoder.py", line 337, in decode
# |     obj, end = self.raw_decode(s, idx=_w(s, 0).end())
# |   File "/usr/lib/python3.8/json/decoder.py", line 355, in raw_decode
# |     raise JSONDecodeError("Expecting value", s, err.value) from None
# | json.decoder.JSONDecodeError: Expecting value: line 1 column 1 (char 0)
# | 
# | During handling of the above exception, another exception occurred:
# | 
# | Traceback (most recent call last):
# |   File "/home/tcwg-buildbot/worker/clang-aarch64-sve-vls/llvm/llvm/utils/lit/lit.py", line 6, in <module>
# |     main()
# |   File "/home/tcwg-buildbot/worker/clang-aarch64-sve-vls/llvm/llvm/utils/lit/lit/main.py", line 130, in main
# |     selected_tests, discovered_tests = GoogleTest.post_process_shard_results(
# |   File "/home/tcwg-buildbot/worker/clang-aarch64-sve-vls/llvm/llvm/utils/lit/lit/formats/googletest.py", line 306, in post_process_shard_results
# |     raise RuntimeError(
# | RuntimeError: Failed to parse json file: /home/tcwg-buildbot/worker/clang-aarch64-sve-vls/stage1/utils/lit/tests/Inputs/googletest-timeout/DummySubDir/OneTest.py-googletest-timeout-4160003-1-2.json
# | 
# `-----------------------------
# RUN: at line 19
FileCheck --check-prefix=CHECK-INF < /home/tcwg-buildbot/worker/clang-aarch64-sve-vls/stage1/utils/lit/tests/Output/googletest-timeout.py.tmp.cfgset.out /home/tcwg-buildbot/worker/clang-aarch64-sve-vls/stage1/utils/lit/tests/googletest-timeout.py
# executed command: FileCheck --check-prefix=CHECK-INF /home/tcwg-buildbot/worker/clang-aarch64-sve-vls/stage1/utils/lit/tests/googletest-timeout.py
# .---command stderr------------
# | /home/tcwg-buildbot/worker/clang-aarch64-sve-vls/stage1/utils/lit/tests/googletest-timeout.py:34:14: error: CHECK-INF: expected string not found in input
# | # CHECK-INF: Timed Out: 1
# |              ^
...

```

https://github.com/llvm/llvm-project/pull/101821