Fix combat movement (#18026)

* Improve combat movement

 - Removed a bunch of logic related to another attempt at fixing combat movement.
- Removed SMART_ACTION_SET_CASTER_COMBAT_DIST and updated smarts scripts accordingly.
- Cherry-picked 7fb7432620
- Cherry-picked 63a6e1e048

Co-Authored-By: Ludovic Barbier <ludovic.barbier03@gmail.com>
Co-Authored-By: Giacomo Pozzoni <giacomopoz@gmail.com>

* Some more cleanup + fix sql

* More fixes to caster chase/combat movement + some cherry picks because why not

- Fix casters always trying to chase to melee range
- Fix casters another case of casters sometimes walking back instead of stopping
- Cleaned up some code
- Cherry picked ca25e8d019
- Cherry picked 96b289cadb

Co-Authored-By: Giacomo Pozzoni <giacomopoz@gmail.com>

* Added parentheses

* Fixed caster combat movement when target is rooted

- Made a few adjustments to chase range and stuff, but nothing set in stone.

* convert uint to int

---------

Co-authored-by: Ludovic Barbier <ludovic.barbier03@gmail.com>
Co-authored-by: Giacomo Pozzoni <giacomopoz@gmail.com>

src/server/game/AI/SmartScripts/SmartAI.h

@@ -64,10 +64,11 @@ public:
     bool IsEscorted() override { return (mEscortState & SMART_ESCORT_ESCORTING); }
     void RemoveEscortState(uint32 uiEscortState) { mEscortState &= ~uiEscortState; }
     void SetAutoAttack(bool on) { mCanAutoAttack = on; }
-    void SetCombatMove(bool on);
+    void SetCombatMove(bool on, float chaseRange = 0.0f);
     bool CanCombatMove() { return mCanCombatMove; }
     void SetFollow(Unit* target, float dist = 0.0f, float angle = 0.0f, uint32 credit = 0, uint32 end = 0, uint32 creditType = 0, bool aliveState = true);
     void StopFollow(bool complete);
+    void MoveAway(float distance);
 
     void SetScript9(SmartScriptHolder& e, uint32 entry, Unit* invoker);
     SmartScript* GetScript() { return &mScript; }
@@ -205,7 +206,6 @@ public:
 
     // Xinef
     void SetWPPauseTimer(uint32 time) { mWPPauseTimer = time; }
-    void SetForcedCombatMove(float dist);
 
 private:
     bool mIsCharmed;