Upstream patch `patch-always-build-python-for-freeze.patch`

[`patch-always-build-python-for-freeze.patch`](https://github.com/astral-sh/python-build-standalone/blob/main/cpython-unix/patch-always-build-python-for-freeze.patch)

Python 3.11+ supports using a provided Python during bootstrapping (e.g. freezing), but only uses it when cross-compiling.

This patch forces always using the provided Python, even when not cross-compiling. This ensures consistent build behavior regardless of cross-compilation status.

Start with cpython-unix/patch-always-build-python-for-freeze.patch and review how Python 3.11+ uses a provided Python during bootstrapping and freezing. Verify that the patch makes this behavior apply both when cross-compiling and when building normally, with consistent results in both cases.

Written by the indexing model from the issue text.