fix: 统一子弹伤害属性设置并添加类型检查

修改多个武器和召唤物的攻击逻辑，将直接设置damage属性改为设置baseDamage属性
添加BulletBase类型检查确保安全访问子弹属性
移除Weapon.gd中冗余的鼠标事件连接

scripts/Contents/Summons/HJM.gd

@@ -24,4 +24,5 @@ func attack(type):
 			findWeaponAnchor("normal"),
 			0
 		):
-			bullet.damage = atk
+			if bullet is BulletBase:
+				bullet.baseDamage = atk

scripts/Contents/Summons/LGBTFlag.gd

@@ -23,8 +23,9 @@ func attack(type):
 				findWeaponAnchor("normal"),
 				startAngle + deg_to_rad(i * angle)
 			):
-				bullet.tracer = tracer
-				bullet.damage = atk
-				bullet.maxTraceTime = maxTraceTime
-				bullet.tracePower = tracePower
+				if bullet is LGBTBullet:
+					bullet.tracer = tracer
+					bullet.baseDamage = atk
+					bullet.maxTraceTime = maxTraceTime
+					bullet.tracePower = tracePower
 			await TickTool.millseconds(50)