Import CPython 3.14.6+ stable branch (2026-06-24)

Summary:
Imported python/cpython `3.14.6+` from upstream rev [`6e61e3c`](https://www.github.com/python/cpython/commit/6e61e3c15292e9a51e9234f59f80da298acf6eff) (committed 2026-06-24 23:56:41+00:00).

# Commit Info

- Base: (`3.14.6+`) - [`33b5aeb`](https://www.github.com/python/cpython/commit/33b5aebfd4bf81361720bc533120a267db23ccc4) (commit date: 2026-06-23 20:57:34+00:00)
- Imported: (`3.14.6+`) - [`6e61e3c`](https://www.github.com/python/cpython/commit/6e61e3c15292e9a51e9234f59f80da298acf6eff) (commit date: 2026-06-24 23:56:41+00:00)

# Noteworthy file changes

- Low-signal files (7 added) (NEWS.d, docs, .github)

Complete list of added/removed files: https://www.internalfb.com/intern/everpaste/?color=0&handle=GBiCySZW6WwtmYQDAB1Zyvk4FQgQbr0LAAAz

Reviewed By: KasraGhodsi

Differential Revision: D109689990

fbshipit-source-id: fc67dab99e17387427f5866dbd3fc7cef1ebbd89

Author: generatedunixname1734921407115435

.github/workflows/build.yml

@@ -625,6 +625,9 @@ jobs:
         run: ./configure --prefix="$BUILD_DIR/cross-python" --with-build-python="$BUILD_DIR/host-python/bin/python3"
       - name: Install cross Python
         run: make -j8 install
+      - name: Display build info
+        run: |
+          "$BUILD_DIR/cross-python/bin/python3" -m test.pythoninfo
       - name: Run test subset with host build
         run: |
           "$BUILD_DIR/cross-python/bin/python3" -m test test_sysconfig test_site test_embed