RFR: 8356080: Address post-integration comments for Stable Values [v4]

[Per Minborg]

> This PR proposes to address comments in the initial PR for Stable Values, which were deferred until after integration.
> 
> Most of the efforts in this PR are to retain "stability" as long as possible so that views of stable collections remain stable and do not evaluate on `toString()` for example.
> 
> Unfortunately, this PR shows the total commit history for stable values.

Per Minborg has updated the pull request incrementally with one additional commit since the last revision:

  Address comments

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Changes:
  - all: https://git.openjdk.org/jdk/pull/25004/files
  - new: https://git.openjdk.org/jdk/pull/25004/files/a2826336..cebd1c0a

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=25004&range=03
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=25004&range=02-03

  Stats: 83 lines in 6 files changed: 71 ins; 2 del; 10 mod
  Patch: https://git.openjdk.org/jdk/pull/25004.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/25004/head:pull/25004

PR: https://git.openjdk.org/jdk/pull/25004