[ISSUE #10831] fix(store): handle minimum hash index in compaction offset map

[beautyarbutin]

Which Issue(s) This PR Fixes

• Fixes Compaction OffsetMap fails when hash index is Integer.MIN_VALUE #10831

Brief Description

CompactionLog.OffsetMap previously used Math.abs(index) % capacity to select a bucket. For Integer.MIN_VALUE, Math.abs remains negative and can produce an invalid negative ByteBuffer position.

Use Math.floorMod(index, capacity) so every hash maps to a valid non-negative bucket. A deterministic MessageDigest regression test produces Integer.MIN_VALUE and verifies both put and get paths.

This follows up on #10841, which was closed without being merged.

How Did You Test This Change?

• mvn -B -ntp -pl store -am -DskipITs -Dtest=OffsetMapTest -Dsurefire.failIfNoSpecifiedTests=false -Dspotbugs.skip=true test
• OffsetMapTest: 3 tests passed
• Reactor: 4 modules succeeded
• Checkstyle: 0 violations

[codecov-commenter]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 49.58%. Comparing base (78b96bc) to head (1c59514).

Additional details and impacted files

@@              Coverage Diff              @@
##             develop   #11209      +/-   ##
=============================================
- Coverage      49.66%   49.58%   -0.09%     
+ Complexity     14332    14305      -27     
=============================================
  Files           1390     1390              
  Lines         103190   103190              
  Branches       13493    13493              
=============================================
- Hits           51250    51163      -87     
- Misses         45763    45832      +69     
- Partials        6177     6195      +18     

☔ View full report in Codecov by Harness.
📢 Have feedback on the report? Share it here.

🚀 New features to boost your workflow:

• ❄️ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.