Merge branch 'ps/refs-onbranch-fixes'

Merge branch 'ps/refs-onbranch-fixes'

Reference backend configuration has been updated to load lazily to
avoid recursive calls during repository initialization when 'onbranch'
configuration conditions are evaluated. This has also fixed a memory
leak and allowed the unused `chdir_notify_reparent()` machinery to be
dropped.

* ps/refs-onbranch-fixes:
  refs: protect against chicken-and-egg recursion
  refs/reftable: lazy-load configuration to fix chicken-and-egg
  reftable: split up write options
  refs/files: lazy-load configuration to fix chicken-and-egg
  refs: move parsing of "core.logAllRefUpdates" back into ref stores
  repository: free main reference database
  chdir-notify: drop unused `chdir_notify_reparent()`
  refs: unregister reference stores from "chdir_notify"
  setup: don't apply "GIT_REFERENCE_BACKEND" without a repository
  setup: stop applying repository format twice
  setup: inline `check_and_apply_repository_format()`