[llvm] [cmake] Pass PYTHON_EXECUTABLE to native builds (PR #163574)

[LLVM Continuous Integration via llvm-commits]

llvm-ci wrote:

LLVM Buildbot has detected a new failure on builder `lldb-aarch64-windows` running on `linaro-armv8-windows-msvc-05` while building `llvm` at step 6 "test".

Full details are available at: https://lab.llvm.org/buildbot/#/builders/141/builds/12761

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

```
Step 6 (test) failure: build (failure)
...
UNSUPPORTED: lldb-api :: functionalities/module_cache/bsd/TestModuleCacheBSD.py (558 of 2329)
PASS: lldb-api :: functionalities/module_cache/debug_index/TestDebugIndexCache.py (559 of 2329)
UNSUPPORTED: lldb-api :: functionalities/module_cache/simple_exe/TestModuleCacheSimple.py (560 of 2329)
PASS: lldb-api :: functionalities/module_cache/universal/TestModuleCacheUniversal.py (561 of 2329)
UNSUPPORTED: lldb-api :: functionalities/mtc/simple/TestMTCSimple.py (562 of 2329)
PASS: lldb-api :: functionalities/multidebugger_commands/TestMultipleDebuggersCommands.py (563 of 2329)
PASS: lldb-api :: functionalities/multiple-slides/TestMultipleSlides.py (564 of 2329)
PASS: lldb-api :: functionalities/multiword-commands/TestMultiWordCommands.py (565 of 2329)
PASS: lldb-api :: functionalities/non-overlapping-index-variable-i/TestIndexVariable.py (566 of 2329)
TIMEOUT: lldb-api :: functionalities/breakpoint/breakpoint_on_lambda_capture/TestBreakOnLambdaCapture.py (567 of 2329)
******************** TEST 'lldb-api :: functionalities/breakpoint/breakpoint_on_lambda_capture/TestBreakOnLambdaCapture.py' FAILED ********************
Script:
--
C:/Users/tcwg/scoop/apps/python/current/python.exe C:/Users/tcwg/llvm-worker/lldb-aarch64-windows/llvm-project/lldb\test\API\dotest.py -u CXXFLAGS -u CFLAGS --env LLVM_LIBS_DIR=C:/Users/tcwg/llvm-worker/lldb-aarch64-windows/build/./lib --env LLVM_INCLUDE_DIR=C:/Users/tcwg/llvm-worker/lldb-aarch64-windows/build/include --env LLVM_TOOLS_DIR=C:/Users/tcwg/llvm-worker/lldb-aarch64-windows/build/./bin --arch aarch64 --build-dir C:/Users/tcwg/llvm-worker/lldb-aarch64-windows/build/lldb-test-build.noindex --lldb-module-cache-dir C:/Users/tcwg/llvm-worker/lldb-aarch64-windows/build/lldb-test-build.noindex/module-cache-lldb\lldb-api --clang-module-cache-dir C:/Users/tcwg/llvm-worker/lldb-aarch64-windows/build/lldb-test-build.noindex/module-cache-clang\lldb-api --executable C:/Users/tcwg/llvm-worker/lldb-aarch64-windows/build/./bin/lldb.exe --compiler C:/Users/tcwg/llvm-worker/lldb-aarch64-windows/build/./bin/clang.exe --dsymutil C:/Users/tcwg/llvm-worker/lldb-aarch64-windows/build/./bin/dsymutil.exe --make C:/Users/tcwg/scoop/shims/make.exe --llvm-tools-dir C:/Users/tcwg/llvm-worker/lldb-aarch64-windows/build/./bin --lldb-obj-root C:/Users/tcwg/llvm-worker/lldb-aarch64-windows/build/tools/lldb --lldb-libs-dir C:/Users/tcwg/llvm-worker/lldb-aarch64-windows/build/./lib --cmake-build-type Release --skip-category=watchpoint C:\Users\tcwg\llvm-worker\lldb-aarch64-windows\llvm-project\lldb\test\API\functionalities\breakpoint\breakpoint_on_lambda_capture -p TestBreakOnLambdaCapture.py
--
Exit Code: 15
Timeout: Reached timeout of 600 seconds

Command Output (stdout):
--
lldb version 22.0.0git (https://github.com/llvm/llvm-project.git revision 0ae0ac0f004d4028051ba01335b02ebadd2b8b4d)
  clang revision 0ae0ac0f004d4028051ba01335b02ebadd2b8b4d
  llvm revision 0ae0ac0f004d4028051ba01335b02ebadd2b8b4d

--

********************
PASS: lldb-api :: functionalities/object-file/TestImageListMultiArchitecture.py (568 of 2329)
UNSUPPORTED: lldb-api :: functionalities/param_entry_vals/basic_entry_values/TestBasicEntryValues.py (569 of 2329)
PASS: lldb-api :: functionalities/optimized_code/TestNoASanExceptionAfterEvalOP_piece.py (570 of 2329)
PASS: lldb-api :: functionalities/paths/TestPaths.py (571 of 2329)
PASS: lldb-api :: functionalities/plugins/python_os_plugin/TestPythonOSPlugin.py (572 of 2329)
PASS: lldb-api :: functionalities/plugins/command_plugin/TestPluginCommands.py (573 of 2329)
UNSUPPORTED: lldb-api :: functionalities/plugins/python_os_plugin/os_plugin_in_dsym/TestOSIndSYM.py (574 of 2329)
UNSUPPORTED: lldb-api :: functionalities/plugins/python_os_plugin/stepping_plugin_threads/TestOSPluginStepping.py (575 of 2329)
UNSUPPORTED: lldb-api :: functionalities/postmortem/FreeBSDKernel/TestFreeBSDKernelLive.py (576 of 2329)
PASS: lldb-api :: functionalities/pointer_num_children/TestPointerNumChildren.py (577 of 2329)
UNSUPPORTED: lldb-api :: functionalities/postmortem/FreeBSDKernel/TestFreeBSDKernelVMCore.py (578 of 2329)
PASS: lldb-api :: functionalities/postmortem/elf-core/expr/TestExpr.py (579 of 2329)
UNSUPPORTED: lldb-api :: functionalities/postmortem/elf-core/gcore/TestGCore.py (580 of 2329)
UNSUPPORTED: lldb-api :: functionalities/postmortem/elf-core/thread_crash/TestLinuxCoreThreads.py (581 of 2329)
PASS: lldb-api :: functionalities/postmortem/elf-core/TestLinuxCore.py (582 of 2329)
UNSUPPORTED: lldb-api :: functionalities/postmortem/mach-core/TestMachCore.py (583 of 2329)
PASS: lldb-api :: functionalities/postmortem/minidump-new/TestMiniDumpNew.py (584 of 2329)
PASS: lldb-api :: functionalities/postmortem/minidump-new/TestMiniDumpUUID.py (585 of 2329)
PASS: lldb-api :: functionalities/postmortem/netbsd-core/TestNetBSDCore.py (586 of 2329)
PASS: lldb-api :: functionalities/postmortem/minidump/TestMiniDump.py (587 of 2329)
PASS: lldb-api :: functionalities/postmortem/wow64_minidump/TestWow64MiniDump.py (588 of 2329)
UNSUPPORTED: lldb-api :: functionalities/pre_run_dylibs/TestPreRunDylibs.py (589 of 2329)

```

</details>

https://github.com/llvm/llvm-project/pull/163574