ArrayLists should be created with explicit size if known [LUCENE-7691]

Many places in Lucene there are ArrayLists being created with no explicit size set even when the exact size is known in advance. In these places, the size should be passed in so the underlying array is sized correctly the first time.

---
Migrated from [LUCENE-7691](https://issues.apache.org/jira/browse/LUCENE-7691) by Michael Braun (@michaelbraun)

No specific files or tests are named. Search the Lucene repository for ArrayList constructions whose required size is already known, inspect each candidate to confirm the size is available, and run the relevant existing tests after updating the identified locations.

Written by the indexing model from the issue text.