wpewebkit: update to 2.52.6, wpebackend-fdo: pull in pending shm fix - #146

Checking PR #146: wpewebkit: update to 2.52.6, wpebackend-fdo: pull in pending shm fix (Makefile Audit)

Commit c6aa861 - wpebackend-fdo: fix stale buffer export on commit without attach:

✅ Makefile does not assign per-package variables at the top level
✅ Makefile contains valid assignment operators and no spaces after ':='
✅ No feed package forces its own inclusion into buildbot default images via DEFAULT+BUILDBOT
✅ Makefile does not reuse PKG_NAME in call, define, or eval lines
✅ File additions contain clean UNIX (LF) line termination
✅ All modified files contain a trailing newline

Commit 5e887d0 - wpewebkit: update to 2.52.6:

✅ PKG_VERSION bump matches context information inside subject line (2.52.6)
✅ Makefile does not assign per-package variables at the top level
✅ Makefile contains valid assignment operators and no spaces after ':='
✅ No feed package forces its own inclusion into buildbot default images via DEFAULT+BUILDBOT
✅ Makefile does not reuse PKG_NAME in call, define, or eval lines
✅ File additions contain clean UNIX (LF) line termination
✅ All modified files contain a trailing newline

Commit 3b9c8ae - wpebackend-fdo: normalize cherry-picked patch via quilt refresh:

✅ File additions contain clean UNIX (LF) line termination
✅ All modified files contain a trailing newline

Package Release Audit:

✅ Package libs/wpebackend-fdo version unchanged, but PKG_RELEASE bumped from '1' to '5'
✅ Package libs/wpewebkit version updated to '2.52.6' and PKG_RELEASE correctly reset to 1