fix(presets): fix javaLTSVersions not preserving partial semver for mise Java versions

[jonahsnider]

Changes

#41179 makes it so a mise config of

[tools]
java = "temurin-21"

doesn't get expanded to

java = "temurin-21.0.12+8.0.LTS"

But the javaLTSVersions workaround preset was overwriting that behavior, which meant Java installs managed by mise would be rewritten to have a pinned version by Renovate. This PR updates workaround.preset.ts so that rolling versions are not upgraded to full-precision versions.

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