fix(kkrpc): dispatch to messageListeners in Electron utility process adapters

Both ElectronUtilityProcessIO (main-process side) and
ElectronUtilityProcessChildIO (child-process side) had on()/off()
methods that registered messageListeners, but handleMessage() never
checked them. Incoming messages went straight to resolveRead/queue,
so any listener registered via on("message", cb) would silently
never fire.

Every other IO adapter in kkrpc follows a three-tier dispatch
priority: messageListeners > resolveRead > messageQueue. The
Electron utility process adapters were the only ones that skipped
the first tier. This fix aligns them with the universal pattern
used by WorkerParentIO, WorkerChildIO, NodeIo, IframeParentIO,
IframeChildIO, WebSocketClientIO, and WebSocketServerIO.

Author: HuakunShen

packages/kkrpc/src/adapters/electron-child.ts

@@ -51,11 +51,15 @@ export class ElectronUtilityProcessChildIO implements IoInterface {
 			return
 		}
 
-		if (this.resolveRead) {
-			this.resolveRead(message)
-			this.resolveRead = null
+		if (this.messageListeners.size > 0) {
+			this.messageListeners.forEach((listener) => listener(message))
 		} else {
-			this.messageQueue.push(message)
+			if (this.resolveRead) {
+				this.resolveRead(message)
+				this.resolveRead = null
+			} else {
+				this.messageQueue.push(message)
+			}
 		}
 	}
 

packages/kkrpc/src/adapters/electron.ts

@@ -71,11 +71,15 @@ export class ElectronUtilityProcessIO implements IoInterface {
 			return
 		}
 
-		if (this.resolveRead) {
-			this.resolveRead(normalized)
-			this.resolveRead = null
+		if (this.messageListeners.size > 0) {
+			this.messageListeners.forEach((listener) => listener(normalized))
 		} else {
-			this.messageQueue.push(normalized)
+			if (this.resolveRead) {
+				this.resolveRead(normalized)
+				this.resolveRead = null
+			} else {
+				this.messageQueue.push(normalized)
+			}
 		}
 	}