Ownership/Licnese of translations contributed to the .po files generated by Gettext builder?

[ltdrobot]

Many Sphinx-based documentation projects include license-related header comments in the .pot files generated by the sphinx-build -b gettext command. For example:

• The .pot files generated from the CMake Documentation contain headers like:

  # SOME DESCRIPTIVE TITLE.
  # Copyright (C) 2000-2025 Kitware, Inc. and Contributors
  # This file is distributed under the same license as the CMake package.
  # FIRST AUTHOR <EMAIL@ADDRESS>, YEAR.
  

• The .pot files generated from the Sphinx Documentation contain headers like:

  # SOME DESCRIPTIVE TITLE.
  # Copyright (C) 2007-2024, the Sphinx developers
  # This file is distributed under the same license as the Sphinx package.
  # FIRST AUTHOR <EMAIL@ADDRESS>, YEAR.
  

Based on this line:

# This file is distributed under the same license as the XXX package.

Does this imply that all the translations contributed to the .po or .pot files are automatically considered to be under the same license as the original project?

If not, what kinds of licenses can be applied to .po files and their translations? Or is there no restriction on this?