feat: add dedicated MaterialItem\AssertBelongsToSameCamp validator using previous_data

[BacLuc]

Removes the compareToPrevious flag from the generic AssertBelongsToSameCamp constraint (it was never used). Implements the protection against MaterialItem camp transfer as a dedicated validator in the MaterialItem namespace, which uses previous_data to compare the new materialList against the original camp.

Fixes #9461

And remove support for options in App\Validator\AssertBelongsToSameCamp

[github-actions]

✅ Feature branch deployment ready!

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🔨 Latest commit	2409a0e3e604643a5c7737e315e79e44c35fc331
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[BacLuc]

Not really necessary because the materialItem has a separate camp property which can't be changed.

curl 'https://pr9960.ecamp3.ch/api/material_items/1e957ac39da0' \
  -X PATCH \
  -H 'Accept: application/hal+json' \
  -H 'Referer: https://pr9960.ecamp3.ch/camps/6973c230d6b1/Sola-2023/material/all' \
  -H 'Origin: https://pr9960.ecamp3.ch' \
  -H 'Content-Type: application/merge-patch+json' \
  -H 'Priority: u=4' \
  -H 'Pragma: no-cache' \
  -H 'Cache-Control: no-cache' \
  --data-raw '{"materialList":"/material_lists/186994977e47", "period": "/periods/88f1f55a69d7", "camp": "/camps/5d28f99890bc"}'

[BacLuc]

Not really necessary because the materialItem has a separate camp property which can't be changed.

curl 'https://pr9960.ecamp3.ch/api/material_items/1e957ac39da0' \
  -X PATCH \
  -H 'Accept: application/hal+json' \
  -H 'Referer: https://pr9960.ecamp3.ch/camps/6973c230d6b1/Sola-2023/material/all' \
  -H 'Origin: https://pr9960.ecamp3.ch' \
  -H 'Content-Type: application/merge-patch+json' \
  -H 'Priority: u=4' \
  -H 'Pragma: no-cache' \
  -H 'Cache-Control: no-cache' \
  --data-raw '{"materialList":"/material_lists/186994977e47", "period": "/periods/88f1f55a69d7", "camp": "/camps/5d28f99890bc"}'

Not needed anymore since we have an immutable camp pointer with commit d83722e.