FindPythonLibs: Prefer libs early in search path regardless of name

Add `NAMES_PER_DIR` to all `find_library` invocations so that we
consider all possible names in each search directory before moving on to
the next directory.  This helps find the package that appears earliest
in the search path regardless of how it names its libraries.

Fixes: #17336

Modules/FindPythonLibs.cmake

@@ -122,6 +122,7 @@ foreach(_CURRENT_VERSION ${_Python_VERSIONS})
   if(WIN32)
     find_library(PYTHON_DEBUG_LIBRARY
       NAMES python${_CURRENT_VERSION_NO_DOTS}_d python
+      NAMES_PER_DIR
       HINTS ${_Python_LIBRARY_PATH_HINT}
       PATHS
       [HKEY_LOCAL_MACHINE\\SOFTWARE\\Python\\PythonCore\\${_CURRENT_VERSION}\\InstallPath]/libs/Debug
@@ -145,6 +146,7 @@ foreach(_CURRENT_VERSION ${_Python_VERSIONS})
       python${_CURRENT_VERSION}m
       python${_CURRENT_VERSION}u
       python${_CURRENT_VERSION}
+    NAMES_PER_DIR
     HINTS
       ${_Python_LIBRARY_PATH_HINT}
     PATHS
@@ -157,6 +159,7 @@ foreach(_CURRENT_VERSION ${_Python_VERSIONS})
   # Look for the static library in the Python config directory
   find_library(PYTHON_LIBRARY
     NAMES python${_CURRENT_VERSION_NO_DOTS} python${_CURRENT_VERSION}
+    NAMES_PER_DIR
     # Avoid finding the .dll in the PATH.  We want the .lib.
     NO_SYSTEM_ENVIRONMENT_PATH
     # This is where the static library is usually located