FRML-152 Fix flaky LS annotation retrieval

[Eve-ning]

Major Changes

The current method of task retrieval:

filter = Filters.create(
    Filters.AND,
    [
        Filters.item(
            # The GS path is in the image column, so we can just filter on that
            Column.data("image"),
            Operator.CONTAINS,
            Type.String,
            Path(file_name).as_posix(),
        )
    ],
)

is a big code smell

We improved it by making it more explicit (less blackboxy) by just using simple syntax for filtering
This can impact performance, but I don't think it'll be significant.