RFR: 8356486: ReverseOrderListView::reversed should return `base`

[Per Minborg]

This PR proposed to let `ReverseOrderListView::reversed` return `base` so that nested reversed views are avoided.

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Commit messages:
 - Let ReverseOrderListView::reversed return base

Changes: https://git.openjdk.org/jdk/pull/25120/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=25120&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8356486
  Stats: 8 lines in 2 files changed: 8 ins; 0 del; 0 mod
  Patch: https://git.openjdk.org/jdk/pull/25120.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/25120/head:pull/25120

PR: https://git.openjdk.org/jdk/pull/25120