Expose events and aborting everywhere

See tc39/proposal-shadowrealm#331 for context.

Tests: web-platform-tests/wpt#31852.

dom.bs

@@ -370,7 +370,7 @@ been {{Event/AT_TARGET}}.
 <h3 id=interface-event>Interface {{Event}}</h3>
 
 <pre class=idl>
-[Exposed=(Window,Worker,AudioWorklet)]
+[Exposed=*]
 interface Event {
   constructor(DOMString type, optional EventInit eventInitDict = {});
 
@@ -785,7 +785,7 @@ workers or worklets, and is inaccurate for events dispatched in <a>shadow trees<
 <h3 id=interface-customevent>Interface {{CustomEvent}}</h3>
 
 <pre class=idl>
-[Exposed=(Window,Worker)]
+[Exposed=*]
 interface CustomEvent : Event {
   constructor(DOMString type, optional CustomEventInit eventInitDict = {});
 
@@ -933,7 +933,7 @@ for historical reasons.
 <h3 id=interface-eventtarget>Interface {{EventTarget}}</h3>
 
 <pre class=idl>
-[Exposed=(Window,Worker,AudioWorklet)]
+[Exposed=*]
 interface EventTarget {
   constructor();
 
@@ -1720,7 +1720,7 @@ example of an API where the latter made sense.
 <h3 id=interface-abortcontroller>Interface {{AbortController}}</h3>
 
 <pre class=idl>
-[Exposed=(Window,Worker)]
+[Exposed=*]
 interface AbortController {
   constructor();
 
@@ -1768,7 +1768,7 @@ to <a for=AbortSignal>signal abort</a> on <a>this</a>'s <a for=AbortController>s
 <h3 id=interface-AbortSignal>Interface {{AbortSignal}}</h3>
 
 <pre class=idl>
-[Exposed=(Window,Worker)]
+[Exposed=*]
 interface AbortSignal : EventTarget {
   [NewObject] static AbortSignal abort(optional any reason);