Fix "File name too long" problem

[neoremind]

Follow-up to #576.

The filename-too-long problem not only exists on MacOS, but also exists on Linux. When indexing with facet, the index folder name as well as the jfr filename exceeds the limit. Error message:

[0.411s][error][jfr,startup] Could not start recording, not able to write to file /local/home/xuzh/workspace/logs/baseline_vs_patch/2026.07.23.14.16.52/bench-index-baseline_vs_patch-wikimediumall.fork_lucene.candidate.facets.taxonomy:Date.taxonomy:Month.taxonomy:DayOfYear.sortedset:Date.sortedset:Month.sortedset:DayOfYear.taxonomy:RandomLabel.sortedset:RandomLabel.Lucene90.Lucene104.dvfields.nd33.3326M.jfr. /local/home/zhangxuv/workspace/logs/baseline_vs_patch/2026.07.23.14.16.52/bench-index-baseline_vs_patch-wikimediumall.fork_lucene.candidate.facets.taxonomy:Date.taxonomy:Month.taxonomy:DayOfYear.sortedset:Date.sortedset:Month.sortedset:DayOfYear.taxonomy:RandomLabel.sortedset:RandomLabel.Lucene90.Lucene104.dvfields.nd33.3326M.jfr: File name too long
Error occurred during initialization of VM
Failure when starting JFR on_create_vm_3

Validate on linux and mac:

~ touch "$(python3 -c "print('a' * 255)")"
~ touch "$(python3 -c "print('a' * 256)")"
touch: cannot touch ‘aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa’: File name too long