RFR: 8356974: tools/launcher/ToolsOpts.java fails if the build id contains "-J" [v2]

[Manuel Hässig]

> When passing `-J-version` to the patched javac, `tools/launcher/ToolsOpts.java` wants to verify that the output corresponds to the expected version output. However, if the build id of the JDK running this test contains the substring "-J", then the test fails incorrectly at:
> 
> https://github.com/openjdk/jdk/blob/97b0dd2167530b3d237e748cd5da0130e38e8af2/test/jdk/tools/launcher/ToolsOpts.java#L131-L134
> 
> This PR addresses this false positive by looking for the substring `" -J-"` instead. The preceding space to ensure that `-J` occurs at the beginning of a word as an argument would and a `-` suffix since `-J` options are always followed by a dash. Further, this PR adds a print of the output of the test result in case this condition fails, to be able to inspect what triggered the failure.
> 
> Testing:
>  - [x] [Github Actions](https://github.com/mhaessig/jdk/actions/runs/15023438332)
>  - [x] tier1 and tier2 for Oracle supported platforms and OSs plus Oracle internal testing

Manuel Hässig has updated the pull request incrementally with one additional commit since the last revision:

  Update copyright

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Changes:
  - all: https://git.openjdk.org/jdk/pull/25230/files
  - new: https://git.openjdk.org/jdk/pull/25230/files/a11ff5e5..388f3683

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=25230&range=01
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=25230&range=00-01

  Stats: 1 line in 1 file changed: 0 ins; 0 del; 1 mod
  Patch: https://git.openjdk.org/jdk/pull/25230.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/25230/head:pull/25230

PR: https://git.openjdk.org/jdk/pull/25230