checkParentEntityAccess() passes "update" into a field access check that only expects "view"/"edit"

Problem/Motivation

checkParentEntityAccess() reuses the same $operation for both an entity access check and a field access check:

if (!$parentEntity->access($operation, $account)) { ... }        // entity-level: view/update/delete                                                                                                                       
if (!$parentEntityField->access($operation, $account)) { ... }   // field-level: only view/edit                                                                                                                              

Field access only ever expects "view" or "edit" (per core's fieldAccess() contract). When the entity-level 'update' peration reaches the second line unchanged, it breaks modules that enforce that contract ? e.g. field_permissions throws an AssertionError for any linkchecker-tracked field set to permission_type: custom.

See
https://git.drupalcode.org/project/field_permissions/-/blob/8.x-1.x/src/...
https://git.drupalcode.org/project/drupal/-/blob/11.x/core/lib/Drupal/Co...