Warning: Undefined array key "weight" in Drupal\workbench_moderation\EntityOperations->entityView() (line 249 of /app/web/modules/contrib/workbench_moderation/src/EntityOperations.php)

Problem/Motivation

Getting the error below when visiting node pages that include the "Moderation control" extra field and are in "Archived" state:

Warning: Undefined array key "weight" in Drupal\workbench_moderation\EntityOperations->entityView() (line 249 of /app/web/modules/contrib/workbench_moderation/src/EntityOperations.php)

Steps to reproduce

Warning appears when viewing a node where:

• Layout is controlled by Layout Builder
• "Placeholder for the 'Moderation control'" field is placed in a layout section
• Node is in "Archived" state

Proposed resolution

Although I'm not certain where the problem originates (and there's likely a better place to prevent the weight property from being missing), I'm currently using Null Coalescing Assignment Operator to assign 0 instead of NULL, by converting:
$build['workbench_moderation_control']['#weight'] = $component['weight'];
into this
$build['workbench_moderation_control']['#weight'] = $component['weight'] ?? 0;
Additional work may be needed to pinpoint where the weight is missed.