EntityContainer allows access to objects of other EntityContainers

[wtertinek]

Expected Behavior

I'm expecting EntityContainer.Element(ObjectId) and EntityContainer.ElementOrDefault(ObjectId) to return only Entities that are children of the container.

Current Behavior

Currently it is possible to get an Entity that is present on a PaperSpace layout via the ModelSpace (see sample code below).

Context

• Linq2Acad Version: 1.0.0
• AutoCAD Version: 2022

Failure Information

The failure does not produce an error in the AutoCAD API. It is just a wrong behavior of Linq2Acad.

Sample Code

using (var db = AcadDatabase.Active())
{
  // We expect to have an Entity in the paper space
  var paperSpaceEntity = db.PaperSpace.First().First();

  var _ = db.ModelSpace.Element(paperSpaceEntity.ObjectId);
  System.Diagnostics.Debug.Fail("No exception thrown");
  // The above call should actually throw an exception because paperSpaceEntity is not present in the model space

  var result = db.ModelSpace.ElementOrDefault(paperSpaceEntity.ObjectId);
  System.Diagnostics.Debug.Assert(result == null);
  // result should actually be null because paperSpaceEntity is not present in the model space
}

Checklist

• [x] I am running the latest version
• [x] I checked the documentation and found no answer
• [x] I checked to make sure that this issue has not already been filed
• [x] I have provided sufficient information for the team