Fix typo in tangent() function that could cause wrong trajectory calculations

The condition `if (x <= 100000.0f)` should be `if (x <= -100000.0f)` to properly
handle negative extreme values from tan(). This bug could cause incorrect spell
trajectory calculations which may lead to visual glitches or unexpected behavior
on the client side.

Co-authored-by: FrancescoBorzi <75517+FrancescoBorzi@users.noreply.github.com>

src/server/game/Spells/Spell.cpp

@@ -1869,7 +1869,7 @@ float tangent(float x)
     //if (x <= -std::numeric_limits<float>::max()) return -std::numeric_limits<float>::max();
     if (x < 100000.0f && x > -100000.0f) return x;
     if (x >= 100000.0f) return 100000.0f;
-    if (x <= 100000.0f) return -100000.0f;
+    if (x <= -100000.0f) return -100000.0f;
     return 0.0f;
 }