Mob collision tweaks (#36296)

* Mob collision tweaks

- Remove the dot product default so moving also pops it.
- Cleanup the cvars so admins can adjust

* Gas canister revert

Content.Server/Movement/Commands/ToggleMobCollisionCommand.cs

@@ -1,24 +0,0 @@
-using Content.Server.Administration;
-using Content.Shared.Administration;
-using Content.Shared.CCVar;
-using Robust.Shared.Configuration;
-using Robust.Shared.Console;
-
-namespace Content.Server.Movement.Commands;
-
-/// <summary>
-/// Temporary command to enable admins to toggle the mob collision cvar.
-/// </summary>
-[AdminCommand(AdminFlags.VarEdit)]
-public sealed class ToggleMobCollisionCommand : IConsoleCommand
-{
-    [Dependency] private readonly IConfigurationManager _cfgManager = default!;
-
-    public string Command => "toggle_mob_collision";
-    public string Description => "Toggles mob collision";
-    public string Help => Description;
-    public void Execute(IConsoleShell shell, string argStr, string[] args)
-    {
-        _cfgManager.SetCVar(CCVars.MovementMobPushing, !_cfgManager.GetCVar(CCVars.MovementMobPushing));
-    }
-}