online: Change STS Hit Finder parallelization on CPU.

Significantly improves performance for high combinatorics. Especially important for the new Module 0 in mSTS 2024.

added Online mCBM labels

assigned to @fweig

added 2 commits

• c0cba5ed - 1 commit from branch computing:master
• 9dba6d42 - online: Change STS Hit Finder parallelization on CPU.

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Dear @v.friese,

you have been identified as code owner of at least one file which was changed with this merge request.

Please check the changes and approve them or request changes.

added CodeOwners label

merged