VVLTC Search Tune

Passed VVLTC with STC bounds:
LLR: 2.94 (-2.94,2.94) <0.00,2.00>
Total: 15788 W: 4106 L: 3868 D: 7814
Ptnml(0-2): 0, 1324, 5009, 1560, 1
https://tests.stockfishchess.org/tests/view/67bf2ddd6e569f6234102ade

Passed VVLTC with LTC bounds:
LLR: 2.95 (-2.94,2.94) <0.50,2.50>
Total: 13622 W: 3620 L: 3368 D: 6634
Ptnml(0-2): 3, 1190, 4170, 1448, 0
https://tests.stockfishchess.org/tests/view/67c04308c8f7c4c0632d8055

closes #5910

Bench: 1823605