Cherrypicks 5 (#440)

* Chances of triggering effects (#27056)

* electrocution

* slippery

* flashibg

* Update SlipperyComponent.cs

* Update SlipperySystem.cs

* Flash buff (#25730)

* flash buff

* oops!

* bool

* 3 -> 1.5 seconds

* okay fix

* sluth

* Flash overlay rework and bugfixes (#27369)

* fix mapping door access (#27784)

Co-authored-by: deltanedas <@deltanedas:kde.org>

* - fix: Errors.

* - fix: Incorporeal.

---------

Co-authored-by: Ed <96445749+TheShuEd@users.noreply.github.com>
Co-authored-by: Nemanja <98561806+EmoGarbage404@users.noreply.github.com>
Co-authored-by: slarticodefast <161409025+slarticodefast@users.noreply.github.com>
Co-authored-by: deltanedas <39013340+deltanedas@users.noreply.github.com>

Content.Server/Flash/Components/DamagedByFlashingComponent.cs

@@ -3,7 +3,6 @@ using Robust.Shared.Prototypes;
 
 namespace Content.Server.Flash.Components;
 
-// Also needed FlashableComponent on entity to work
 [RegisterComponent, Access(typeof(DamagedByFlashingSystem))]
 public sealed partial class DamagedByFlashingComponent : Component
 {
@@ -11,5 +10,5 @@ public sealed partial class DamagedByFlashingComponent : Component
     /// damage from flashing
     /// </summary>
     [DataField(required: true), ViewVariables(VVAccess.ReadWrite)]
-    public DamageSpecifier FlashDamage = new ();
+    public DamageSpecifier FlashDamage = new();
 }