[CSHARP-1430] LINQ OfType uses wrong projector when the current projector is a field. - MongoDB

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var query = CreateQuery()

                .Select(x => x.C.E)

                .OfType<V>()

                .Where(v => v.W == 1111);

Should generated this:

    Assert(query,

1,

                "{ $project: { 'C.E': 1, _id: 0 } }",

                "{ $match: { 'C.E._t': 'V' } }",

                "{ $match: { 'C.E.W': 1111 } }");

Rather, it generates this:

    Assert(query,

1,

                "{ $project: { 'C.E': 1, _id: 0 } }",

                "{ $match: { 'C.E._t': 'V' } }",

                "{ $match: { 'W': 1111 } }");

is related to

CSHARP-1429 Invalid query created when using unwind stage and match stage in Aggregate method