Entity equality causes translation failure inside projection

[roji]

The following fails:

_ = await context.Blogs
    .Select(b => new
    {
        Foo = b.BlogDetails == null ? null : new
        {
            b.BlogDetails.Id
        }
    })
    .Where(x => x.Foo != null)
    .ToListAsync();

The expression tree after preprocessing:

[Microsoft.EntityFrameworkCore.Query.QueryRootExpression]
    .LeftJoin([Microsoft.EntityFrameworkCore.Query.QueryRootExpression], b => Property(b, "BlogDetailsId"), b0 => Property(b0, "Id"), (o, i) => new TransparentIdentifier`2(Outer = o, Inner = i))
    .Where(b => (IIF((b.Inner == null), null, new <>f__AnonymousType1`1(Id = b.Inner.Id)) != null))
    .Select(b => new <>f__AnonymousType0`1(Foo = IIF((b.Inner == null), null, new <>f__AnonymousType1`1(Id = b.Inner.Id))))

The b.Inner == null causes translation failure.

Originally flagged by @mdmoura in #21148

[smitpatel]

Duplicate of #17020

Wrong title.

[smitpatel]

Comparing IIF((b.Inner == null), null, new <>f__AnonymousType11(Id = b.Inner.Id))` to null fails in translation.