doc: graduate multiple experimental apis

* events.addAbortListener
* process apis
* util.aborted

PR-URL: #57765
Reviewed-By: Michaël Zasso <[email protected]>
Reviewed-By: Luigi Pinca <[email protected]>
Reviewed-By: Moshe Atlow <[email protected]>

Author: jasnell

doc/api/events.md

@@ -1834,10 +1834,12 @@ setMaxListeners(5, target, emitter);
 added:
  - v20.5.0
  - v18.18.0
+changes:
+ - version: REPLACEME
+   pr-url: https://github.com/nodejs/node/pull/57765
+   description: Change stability index for this feature from Experimental to Stable.
 -->
 
-> Stability: 1 - Experimental
-
 * `signal` {AbortSignal}
 * `listener` {Function|EventListener}
 * Returns: {Disposable} A Disposable that removes the `abort` listener.

doc/api/process.md

@@ -1136,15 +1136,16 @@ added:
   - v19.6.0
   - v18.15.0
 changes:
+  - version: REPLACEME
+    pr-url: https://github.com/nodejs/node/pull/57765
+    description: Change stability index for this feature from Experimental to Stable.
   - version:
     - v22.0.0
     - v20.13.0
     pr-url: https://github.com/nodejs/node/pull/52039
     description: Aligned return value with `uv_get_constrained_memory`.
 -->
 
-> Stability: 1 - Experimental
-
 * {number}
 
 Gets the amount of memory available to the process (in bytes) based on
@@ -1160,10 +1161,12 @@ information.
 added:
   - v22.0.0
   - v20.13.0
+changes:
+  - version: REPLACEME
+    pr-url: https://github.com/nodejs/node/pull/57765
+    description: Change stability index for this feature from Experimental to Stable.
 -->
 
-> Stability: 1 - Experimental
-
 * {number}
 
 Gets the amount of free memory that is still available to the process
@@ -2301,10 +2304,12 @@ setup();
 added:
   - v17.3.0
   - v16.14.0
+changes:
+  - version: REPLACEME
+    pr-url: https://github.com/nodejs/node/pull/57765
+    description: Change stability index for this feature from Experimental to Stable.
 -->
 
-> Stability: 1 - Experimental
-
 * Returns: {string\[]}
 
 The `process.getActiveResourcesInfo()` method returns an array of strings

doc/api/util.md

@@ -2730,10 +2730,12 @@ channel.port2.postMessage(signal, [signal]);
 added:
  - v19.7.0
  - v18.16.0
+changes:
+ - version: REPLACEME
+   pr-url: https://github.com/nodejs/node/pull/57765
+   description: Change stability index for this feature from Experimental to Stable.
 -->
 
-> Stability: 1 - Experimental
-
 * `signal` {AbortSignal}
 * `resource` {Object} Any non-null object tied to the abortable operation and held weakly.
   If `resource` is garbage collected before the `signal` aborts, the promise remains pending,