revlog: remove legacy usage of `_candidate_group_chunk_size`
All core code is now getting the setting from the DeltaConfig object.
--- a/mercurial/revlogutils/deltas.py Wed Oct 11 00:04:08 2023 +0200
+++ b/mercurial/revlogutils/deltas.py Wed Oct 11 00:04:23 2023 +0200
@@ -719,7 +719,7 @@
good = None
deltas_limit = textlen * LIMIT_DELTA2TEXT
- group_chunk_size = revlog._candidate_group_chunk_size
+ group_chunk_size = revlog.delta_config.candidate_group_chunk_size
tested = {nullrev}
candidates = _refinedgroups(