scanner with full_text_query does not respect fragments restriction

[artemru]

a simple repro that produces simple lance dataset with two fragments

import pyarrow as pa
import lance
from lance.query import MatchQuery
import polars as pl

table1 = pa.Table.from_pydict({"text": list("bcdfghjkl")})
table2 = pa.Table.from_pydict({"text": list("123456")})
lance_ds = lance.write_dataset(table1, "/tmp/tt.lance", mode="overwrite")
lance_ds.insert(table2)
assert len(lance_ds.get_fragments()) == 2

lance_ds.create_scalar_index(
    index_type="INVERTED",
    column="text",
    ascii_folding=False,
    stem=False,
    max_token_length=30,
    base_tokenizer="simple",
    with_position=False,
    remove_stop_words=False,
    replace=True
)

print(pl.from_arrow(lance_ds.scanner(full_text_query=MatchQuery("c", "text"),
                                     fragments=[lance_ds.get_fragments()[1]],
                                     scan_in_order=True,
                                     limit=2, with_row_id=True).to_table()))

produces

however, lance_ds.get_fragments()[1] does not contain c !