Rider static analysis (#433)

* Non-accessed local variable

* Merge cast and type checks.

* StringComparison.Ordinal added for better culture support

* Supposed code improvement in launcher. Remove unused code.

* Update ExplosionHelper.cs

Unintentional change.

* Optimized Import

* Add Robust.Shared.Utility import where it was deleted

* Other random suggestion

* Improve my comment

Content.Client/GameObjects/Components/Nutrition/DrinkFoodVisualizer2D.cs

@@ -35,7 +35,7 @@ namespace Content.Client.GameObjects.Components.Nutrition
             }
             else
             {
-                sprite.LayerSetState(0, $"icon-0");
+                sprite.LayerSetState(0, "icon-0");
             }
         }
     }