RFR: 8356486: ReverseOrderListView should override reversed() to return `base` [v2]

[Per Minborg]

> This PR proposed to let `ReverseOrderListView::reversed` directly return `base` instead of going though a more complicated code path.

Per Minborg has updated the pull request incrementally with two additional commits since the last revision:

 - Remove spurious class
 - Address comments

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Changes:
  - all: https://git.openjdk.org/jdk/pull/25120/files
  - new: https://git.openjdk.org/jdk/pull/25120/files/546169f4..c21b9108

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=25120&range=01
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=25120&range=00-01

  Stats: 7 lines in 2 files changed: 0 ins; 6 del; 1 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