DamageSpecifier Total => GetTotal (#24160)

* DamageSpecifier [Obsolete] Total => GetTotal()

* Remove obsolete Total member from DamageSpecifier.

Content.IntegrationTests/Tests/VendingMachineRestockTest.cs

@@ -298,7 +298,7 @@ namespace Content.IntegrationTests.Tests
                 Assert.That(damageResult, Is.Not.Null,
                     "Received null damageResult when attempting to damage restock box.");
 
-                Assert.That((int) damageResult!.Total, Is.GreaterThan(0),
+                Assert.That((int) damageResult!.GetTotal(), Is.GreaterThan(0),
                     "Box damage result was not greater than 0.");
 #pragma warning restore NUnit2045
             });