refactor(ui): update RightPanelView action toolbar implementation

Replace the custom ActionToolbarImpl with the default createActionToolbar method. This change simplifies the toolbar setup process, removes unnecessary overrides, and ensures the toolbar background color is updated correctly.

core/src/main/kotlin/com/phodal/shirecore/ui/RightPanelView.kt

@@ -1,11 +1,10 @@
 package com.phodal.shirecore.ui
 
 import com.intellij.openapi.Disposable
-import com.intellij.openapi.actionSystem.ActionGroup
 import com.intellij.openapi.actionSystem.ActionManager
 import com.intellij.openapi.actionSystem.ActionPlaces
 import com.intellij.openapi.actionSystem.DataProvider
-import com.intellij.openapi.actionSystem.impl.ActionToolbarImpl
+import com.intellij.openapi.actionSystem.DefaultActionGroup
 import com.intellij.openapi.application.ApplicationManager
 import com.intellij.openapi.application.ReadAction
 import com.intellij.openapi.command.WriteCommandAction
@@ -50,25 +49,23 @@ class RightPanelView(
     }
 
     private fun setupActionForEditor(project: Project) {
-        val toolbarActionGroup = ActionManager.getInstance().getAction("Shire.ToolWindow.Toolbar") as? ActionGroup
+        val toolbarActionGroup = ActionManager.getInstance().getAction("Shire.ToolWindow.Toolbar") as? DefaultActionGroup
         toolbarActionGroup?.let {
-            val toolbar: ActionToolbarImpl =
-                object : ActionToolbarImpl(ActionPlaces.MAIN_TOOLBAR, toolbarActionGroup, true) {
-                    override fun updateUI() {
-                        super.updateUI()
-                        editor.component.setBorder(JBUI.Borders.empty())
-                    }
-                }
-
-            toolbar.setBackground(editor.backgroundColor)
-            toolbar.setOpaque(true)
+            val toolbar = ActionManager.getInstance().createActionToolbar(
+                ActionPlaces.MAIN_TOOLBAR,
+                toolbarActionGroup,
+                true
+            )
+
+            toolbar.component.setBackground(editor.backgroundColor)
+            toolbar.component.setOpaque(true)
             toolbar.targetComponent = editor.contentComponent
-            editor.headerComponent = toolbar
+            editor.headerComponent = toolbar.component
 
             val connect = project.messageBus.connect(this)
             val topic: Topic<EditorColorsListener> = EditorColorsManager.TOPIC
             connect.subscribe(topic, EditorColorsListener {
-                toolbar.setBackground(editor.backgroundColor)
+                toolbar.component.setBackground(editor.backgroundColor)
             })
         }
     }