Application Framework - Invalid document after partial read of XBF

[dpasukhi]

Resolve missed refereces until all are resolved to produce expected result without exceptions. XCAFDoc_ShapeTool::GetShape() throws Standard_NullObject exception after partial read of XBF document

XCAFDoc_ShapeTool::GetShape() throws Standard_NullObject exception when XBF document is read partially using functionality of PCDM_ReaderFilter.

The problem is that XBF driver resolves N+1 level of referenced items only while XCAFDoc_ShapeTool::GetShape() requires to follow the deeper chain of references.

[dpasukhi]

Needs to refactor code and check careful with "while" scenario. Additionally needs to move variables from the class field to method body if possible.

[dpasukhi]

Original: https://tracker.dev.opencascade.org/view.php?id=33855