VVLTC parameters tweak

[FauziAkram]

VVLTC parameters tweak

Some notes:

• Both tests were conducted on top of reduce full depth search twice #5848.
• Based on tuning suggestions, the extension for capturing the previously moved piece was removed/simplified. (Developers can attempt to reintroduce it post-merge if needed.)
• Initially, bonusScale = std::max(bonusScale, -2); was included but later removed in the second test upon Viz's request, however, it was nearly non-functional anyway.

Passed VVLTC under STC bounds:
LLR: 2.95 (-2.94,2.94) <0.00,2.00>
Total: 31508 W: 8153 L: 7895 D: 15460
Ptnml(0-2): 1, 2747, 10005, 2995, 6
https://tests.stockfishchess.org/tests/view/679fdc7a0774dfd78deb1350

Passed VVLTC under LTC bounds:
LLR: 2.94 (-2.94,2.94) <0.50,2.50>
Total: 55026 W: 14370 L: 14046 D: 26610
Ptnml(0-2): 7, 4957, 17262, 5279, 8
https://tests.stockfishchess.org/tests/view/679fec920774dfd78deb19b8

bench: 2589810

[github-actions]

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(execution 13123928043 / attempt 1)