stellarium: Could not find a package configuration file provided by "Qt6LinguistTools"

[snowflake (Dave Evans)]

stellarium @23.4_1 on macOS 15.7.2 comes up with this config phase error:

CMake Error at po/CMakeLists.txt:40 (FIND_PACKAGE):
  By not providing "FindQt6LinguistTools.cmake" in CMAKE_MODULE_PATH this
  project has asked CMake to find a package configuration file provided by
  "Qt6LinguistTools", but CMake did not find one.
  Could not find a package configuration file provided by "Qt6LinguistTools"
  with any of the following names:
    Qt6LinguistToolsConfig.cmake
    qt6linguisttools-config.cmake
  Add the installation prefix of "Qt6LinguistTools" to CMAKE_PREFIX_PATH or
  set "Qt6LinguistTools_DIR" to a directory containing one of the above
  files.  If "Qt6LinguistTools" provides a separate development package or
  SDK, be sure it has been installed.
-- Configuring incomplete, errors occurred!

Qt6 has changed recently.

CMakeError.log has just one line: "Performing Test UNDEFINED_SYMBOLS_ALLOWED failed with the following output"

[ryandesign (Ryan Carsten Schmidt)]

Duplicate of #70059.