Block patches

- Fix for file-posix's zoning code crashing on I/O errors
- Throttling refactoring

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* tag 'pull-block-2023-09-01' of https://gitlab.com/hreitz/qemu

:
  tests/file-io-error: New test
  file-posix: Simplify raw_co_prw's 'out' zone code
  file-posix: Fix zone update in I/O error path
  file-posix: Check bs->bl.zoned for zone info
  file-posix: Clear bs->bl.zoned on error
  block/throttle-groups: Use ThrottleDirection instread of bool is_write
  fsdev: Use ThrottleDirection instread of bool is_write
  throttle: use THROTTLE_MAX/ARRAY_SIZE for hard code
  throttle: use enum ThrottleDirection instead of bool is_write
  cryptodev: use NULL throttle timer cb for read direction
  test-throttle: test read only and write only
  throttle: support read-only and write-only
  test-throttle: use enum ThrottleDirection
  throttle: introduce enum ThrottleDirection

Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>