Zheng, Lei ad9ad30c00 App: fix external document loading ...

The problem happens when partial loading is enabled. If document A
contains a link to some object in document B, it will load B as partial
document with only that object and its necessary dependencies. But if
document A contains another link to some object in document C which also
has a link to some object in document B, the link in document C may not
be restored, because document B is partially loaded without the linked
object. This patch will check for this case and reload document B for
more objects.

See an example reported in
https://forum.freecadweb.org/viewtopic.php?p=495078#p495078

2021-10-30 11:03:52 +08:00

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