Valian / live_vue / eb351221d2d1ea40a36eddb1205e3f6ef71e5654-PR-94

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main: 82%

Pull #94

github

bugfix: correctly filter deleted items from embed_many error arrays

When items are removed from embed_many collections, the error array was
including extra nil values for deleted items, causing misalignment with
the values array.

Root cause: collect_changeset_errors mapped over ALL changesets including
those with params==nil (deleted items), while collect_changeset_values
filtered them out.

Fix: Added Enum.filter(&(&1.params != nil)) to error collection to match
the filtering logic used for values (line 210).

Also added tests verifying error/values array length matching for both
simple and deeply nested embed_many scenarios.

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