[lworld] RFR: 8372038: [lworld] Update ExplodedImage to use preview mode correctly

[David Beaumont]

On Tue, 25 Nov 2025 17:55:03 GMT, Roger Riggs <rriggs at openjdk.org> wrote:

>> Adds preview mode support for ExplodedImage.
>> 
>> Adds tests so both ExplodedImage and ImageReader implementations of SystemImage are tested with exactly the same test data and assertions.
>
> src/java.base/share/classes/jdk/internal/jrtfs/ExplodedImage.java line 157:
> 
>> 155:                 }
>> 156:             }
>> 157:             collectChildNodes(modulesDir.resolve(relPath), list);
> 
> This merges the preview files with the normal files; does that result in any duplicates?

Well spotted, thanks. That should be filtering existing preview versions out.
I fixed the test so it would spot this issue.

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PR Review Comment: https://git.openjdk.org/valhalla/pull/1743#discussion_r2564575706