RFR: 8368098: java/nio/channels/Channels/AsyncCloseStreams.java fails in junit timeout

[Brian Burkhalter]

In `AsyncCloseStreams.write`, write 100,000 bytes in each loop iteration instead of just one, the intent being to decrease the number of iterations.

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Commit messages:
 - 8368098: java/nio/channels/Channels/AsyncCloseStreams.java fails in junit timeout

Changes: https://git.openjdk.org/jdk/pull/27750/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=27750&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8368098
  Stats: 3 lines in 1 file changed: 2 ins; 0 del; 1 mod
  Patch: https://git.openjdk.org/jdk/pull/27750.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/27750/head:pull/27750

PR: https://git.openjdk.org/jdk/pull/27750