fix(Core/Unit): fix Dual Wield for more creatures, CREATURE_FLAG_EXTRA_USE_OFFHAND_ATTACK, creature disarm damage (#20015)

* enable CREATURE_FLAG_EXTRA_USE_OFFHAND_ATTACK

* sql set CREATURE_FLAG_EXTRA_USE_OFFHAND

* use new HasOffHandWeaponForAttack instead of haveOffhandWeapon

no longer requires m_CanDualwield set to use Offhand attack
requires non-disarmed weapon in Offhand OR creature_flag_extra enabled

Co-authored-by: Ovah <dreadkiller@gmx.de>
Co-authored-by: Warlockbugs <warlockbugs@outlook.com>

* Make shapeshift forms which dont override attack speed use weapon damage

Co-authored-by: killerwife <killerwife@gmail.com>

* SetEquipmentSlots turning off damage update when using template default

Co-authored-by: killerwife <killerwife@gmail.com>

* Setup DualWield & Damage On Equipment Updates, implement Set and GetVirtualItem

Co-authored-by: Yatzii <47720837+Yatzii93@users.noreply.github.com>

* creature disarm damage

set disarm to reduce minmax damage by 50% instead of setting to 0

Co-authored-by: Warlockbugs <warlockbugs@outlook.com>

---------

Co-authored-by: Ovah <dreadkiller@gmx.de>
Co-authored-by: Warlockbugs <warlockbugs@outlook.com>
Co-authored-by: killerwife <killerwife@gmail.com>
Co-authored-by: Yatzii <47720837+Yatzii93@users.noreply.github.com>

data/sql/updates/pending_db_world/rev_1726975868981293914.sql

@@ -0,0 +1,53 @@
+--
+UPDATE `creature_template` SET `flags_extra` = `flags_extra` | 2048 WHERE `entry` IN (
+3672,  -- Boahn
+4403,  -- Muckshell Pincer
+4540,  -- Scarlet Monk
+7033,  -- Firegut Ogre
+8218,  -- Witherheart the Stalker
+10478, -- Splintered Skeleton
+10488, -- Risen Construct
+11022, -- Alexi Barov
+12100, -- Lava Reaver
+12262, -- Ziggurat Protector
+12263, -- Slaughterhouse Protector
+14688, -- Prince Sandoval
+14882, -- Atal'ai Mistress
+16299, -- Skeletal Shocktrooper
+16422, -- Skeletal Soldier
+16593, -- Shattered Hand Brawler
+16808, -- Warchief Kargath Bladefist
+16936, -- Dreghood Wanderer
+18120, -- Ango'rosh Mauler
+18211, -- Murkblood Brute
+18541, -- Urdak
+18860, -- Daughter of Destiny
+19191, -- Arazzius the Cruel
+20456, -- Ethereum Researcher
+20582, -- Shattered Hand Brawler (1)
+20597, -- Warchief Kargath Bladefist (1)
+20683, -- Prophetess Cavrylin
+20783, -- Porfus the Gem Gorger
+20784, -- Armbreaker Huffaz
+20785, -- Fel Tinkerer Zortan
+20786, -- Gul'bor
+20790, -- Malevus the Mad
+20929, -- Wrath Lord
+20984, -- Protectorate Defender
+21639, -- Illidari Slayer
+21717, -- Dragonmaw Wrangler
+21805, -- Protectorate Avenger
+21877, -- Karsius the Ancient Watcher
+22004, -- Leoroxx
+22076, -- Torloth the Magnificent
+22082, -- Shadowmoon Slayer
+22199, -- Slaag
+22377, -- Akuno
+22825, -- Matron Li-sahar
+23008, -- Ethereum Jailor
+23410, -- Spirit of Udalo
+23411, -- Spirit of Olum
+24882, -- Brutallus
+37132, -- Ymirjar Battle-Maiden
+38132  -- Ymirjar Battle-Maiden (1)
+);