fix(areatrigger): use actual DBC dimensions instead of inflated minimums

The minimum floor (3.0 for sphere radius, 4.0 for box dimensions) was
inflating narrow triggers like AT 5711 (boxWidth 1.06 → 4.0), causing
false area trigger fires near the Stormwind AH and unexpected teleports.

src/game/movement_handler.cpp

@@ -2547,19 +2547,17 @@ void MovementHandler::checkAreaTriggers() {
 
         bool inside = false;
         if (at.radius > 0.0f) {
-            // Sphere trigger — use actual radius, with small floor for very tiny triggers
-            float effectiveRadius = std::max(at.radius, 3.0f);
+            // Sphere trigger — use actual DBC radius
             float dx = px - at.x;
             float dy = py - at.y;
             float dz = pz - at.z;
             float distSq = dx * dx + dy * dy + dz * dz;
-            inside = (distSq <= effectiveRadius * effectiveRadius);
+            inside = (distSq <= at.radius * at.radius);
         } else if (at.boxLength > 0.0f || at.boxWidth > 0.0f || at.boxHeight > 0.0f) {
-            // Box trigger — use actual size, with small floor for tiny triggers
-            float boxMin = 4.0f;
-            float effLength = std::max(at.boxLength, boxMin);
-            float effWidth = std::max(at.boxWidth, boxMin);
-            float effHeight = std::max(at.boxHeight, boxMin);
+            // Box trigger — use actual DBC dimensions
+            float effLength = at.boxLength;
+            float effWidth = at.boxWidth;
+            float effHeight = at.boxHeight;
 
             float dx = px - at.x;
             float dy = py - at.y;