[rd debugger] IJPL-217871 Remove unnecessary RPC call: trigger settings changed on frontend

GitOrigin-RevId: 4bc1c5cee5f7532d98b7c5f3ae08ac1d912ae12a

platform/xdebugger-api/src/com/intellij/xdebugger/XDebugSessionListener.java

@@ -32,6 +32,11 @@ public interface XDebugSessionListener extends EventListener {
 
   default void settingsChanged() {
   }
+
+  @ApiStatus.Internal
+  default void settingsChangedFromFrontend() {
+    settingsChanged();
+  }
   
   default void breakpointsMuted(boolean muted) {
   }

platform/xdebugger-impl/backend/src/com/intellij/platform/debugger/impl/backend/BackendXDebugSessionApi.kt

@@ -176,7 +176,7 @@ internal class BackendXDebugSessionApi : XDebugSessionApi {
   override suspend fun triggerUpdate(sessionId: XDebugSessionId) {
     val session = sessionId.findValue() ?: return
     withContext(Dispatchers.EDT) {
-      session.rebuildViews()
+      session.frontendUpdate()
     }
   }
 

platform/xdebugger-impl/backend/src/com/intellij/platform/debugger/impl/backend/BackendXDebuggerManagerApi.kt

@@ -155,6 +155,10 @@ internal class BackendXDebuggerManagerApi : XDebuggerManagerApi {
         rawEvents.trySend { XDebuggerSessionEvent.SettingsChanged }
       }
 
+      override fun settingsChangedFromFrontend() {
+        // Ignore changes from the frontend side, they're already handled in FrontendXDebuggerSession
+      }
+
       override fun breakpointsMuted(muted: Boolean) {
         rawEvents.trySend { XDebuggerSessionEvent.BreakpointsMuted(muted) }
       }

platform/xdebugger-impl/frontend/src/com/intellij/platform/debugger/impl/frontend/FrontendXDebuggerSession.kt

@@ -447,7 +447,9 @@ class FrontendXDebuggerSession private constructor(
   }
 
   override fun rebuildViews() {
-    cs.launch {
+    cs.launch(Dispatchers.EDT) {
+      // trigger optimistically
+      eventsDispatcher.multicaster.settingsChanged()
       XDebugSessionApi.getInstance().triggerUpdate(id)
     }
   }

platform/xdebugger-impl/src/com/intellij/xdebugger/impl/XDebugSessionImpl.kt

@@ -304,6 +304,10 @@ class XDebugSessionImpl @JvmOverloads constructor(
     myDispatcher.getMulticaster().settingsChanged()
   }
 
+  fun frontendUpdate() {
+    myDispatcher.getMulticaster().settingsChangedFromFrontend()
+  }
+
   override fun getRunProfile(): RunProfile? {
     return if (this.executionEnvironment != null) executionEnvironment.runProfile else null
   }