Also, add a missing quote around -DCMAKE_INSTALL_PREFIX to avoid word
splitting.
Otherwise, cmake would warn:
```
+ cmake -S /home/runner/work/_temp -B /home/runner/work/_temp/build -DCMAKE_COMPILE_WARNING_AS_ERROR=ON -DBUILD_BENCH=ON -DBUILD_FUZZ_BINARY=ON -DCMAKE_INSTALL_PREFIX=/home/runner/work/_temp/ci/scratch_ βΏπ§ͺ_/out -Werror=dev --preset=dev-mode -DSANITIZERS=address,float-divide-by-zero,integer,undefined -DCMAKE_C_COMPILER=clang -DCMAKE_CXX_COMPILER=clang++ -DCMAKE_C_FLAGS=-ftrivial-auto-var-init=pattern -DCMAKE_CXX_FLAGS=-ftrivial-auto-var-init=pattern -DCMAKE_EXE_LINKER_FLAGS=-fuse-ld=mold -DAPPEND_CXXFLAGS=-std=c++23 '-DAPPEND_CPPFLAGS=-DARENA_DEBUG -DDEBUG_LOCKORDER'
CMake Warning:
Ignoring extra path from command line:
"βΏπ§ͺ_/out"
```
Also, allow spaces in the debug log file regex in a test.
Otherwise, the test would fail:
```
TestFramework (ERROR): Unexpected exception:
Traceback (most recent call last):
File "./test/functional/test_framework/test_framework.py", line 142, in main
self.run_test()
~~~~~~~~~~~~~^^
File "./test/functional/feature_logging.py", line 40, in run_test
self.nodes[0].assert_start_raises_init_error([f"-debuglogfile={invalidname}"], exp_stderr, match=ErrorMatch.FULL_REGEX)
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "./test/functional/test_framework/test_node.py", line 743, in assert_start_raises_init_error
self._raise_assertion_error(
~~~~~~~~~~~~~~~~~~~~~~~~~~~^
'Expected message "{}" does not fully match stderr:\n"{}"'.format(expected_msg, stderr))
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "./test/functional/test_framework/test_node.py", line 229, in _raise_assertion_error
raise AssertionError(self._node_msg(msg))
AssertionError: [node 0] Expected message "Error: Could not open debug log file \S+$" does not fully match stderr:
"Error: Could not open debug log file /Users/runner/work/bitcoin-core-with-ci/bitcoin-core-with-ci/repo_archive/ci/scratch_ βΏπ§ͺ_/test_runner/test_runner_βΏ_π_20260218_095938/feature_logging_31/node0/regtest/foo/foo.log"
```
Also, add missing quotes in a test. Otherwise, the test would fail:
```
455/455 - feature_notifications.py failed, Duration: 402 s
stdout:
TestFramework (INFO): Initializing test directory /home/runner/work/_temp/ci/scratch_ βΏπ§ͺ_/test_runner/test_runner_βΏ_π_20260218_113529/feature_notifications_128
TestFramework (INFO): test -blocknotify
TestFramework.utils (ERROR): wait_until() failed. Predicate: ''''
self.wait_until(lambda: len(os.listdir(self.blocknotify_dir)) == block_count, timeout=10)
'''