RFR: 8362429: AssertionError in File.listFiles(FileFilter | FilenameFilter) [v3]

[Brian Burkhalter]

> Address the same problem as in #26224 but for the `listFiles` variants with a filter parameter.

Brian Burkhalter has updated the pull request incrementally with one additional commit since the last revision:

  8362429: Simplify listFile loops; add non-null filter tests

-------------

Changes:
  - all: https://git.openjdk.org/jdk/pull/26353/files
  - new: https://git.openjdk.org/jdk/pull/26353/files/1c61743a..cfd494f8

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=26353&range=02
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=26353&range=01-02

  Stats: 46 lines in 2 files changed: 16 ins; 18 del; 12 mod
  Patch: https://git.openjdk.org/jdk/pull/26353.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/26353/head:pull/26353

PR: https://git.openjdk.org/jdk/pull/26353