Prefer discovered and double checks in capture ordering.
Increase weight for captured piece value if also a discovered or double check.
Passed STC:
LLR: 2.94 (-2.94,2.94) <0.00,2.00>
Total: 142144 W: 36632 L: 36164 D: 69348
Ptnml(0-2): 429, 16470, 36788, 16974, 411
https://tests.stockfishchess.org/tests/view/68052d7498cd372e3ae9faaa
Passed LTC:
LLR: 2.94 (-2.94,2.94) <0.50,2.50>
Total: 668328 W: 170837 L: 169238 D: 328253
Ptnml(0-2): 308, 72010, 187990, 73487, 369
https://tests.stockfishchess.org/tests/view/68053c9398cd372e3aea043b
closes https://github.com/official-stockfish/Stockfish/pull/6003
Bench: 1636625