* fix(install): preserve non-array hook entries during uninstall
Uninstall filtering returned null for hook entries without a hooks
array, silently deleting user-owned entries with unexpected shapes.
Return the entry unchanged instead so only GSD hooks are removed.
* test(install): add regression test for non-array hook entry preservation (#1825)
Fix mirrored filterGsdHooks helper to match production code and add
test proving non-array hook entries survive uninstall filtering.
00c6a5ea68