Does EF Core allow a filtered/partial unique index which does not allow multiple NULLs?

EF Core allows a unique (filtered) index to contain multiple NULLs.

Can I configure it to not allow multiple NULLs?

Suppose I've defined a unique index over properties Column1, Column2, Column3:

config.Entity<Product>()
    .HasIndex("Column1", "Column2", "Column3")
    .IsUnique();

An example:

Id   Column1   Column2   Column3
1    100       "foo"     "bar"    // unique
2    100       "foo"     "bar"    // not allowed (dupe)
3    100       NULL      "bar"    // allowed
4    100       NULL      "bar"    // allowed - but I want this to fail
5    100       NULL      "bar"    // allowed - but I want this to fail
6    100       NULL      "bar"    // allowed - but I want this to fail

This is what I want:

• Row1 unique
• Row2 fails (unique constraint violation) as it's a dupe of row1
• Row3 allowed because it's different to row1
• Row4/5/6 must fail, because they are dupes of row3

But row4/5/6 do not fail.