[PyCharm] PY-77045 per cell actions toolbar shown only for selected cells / fixed bug with "not shown for newly created cell"

GitOrigin-RevId: b8a1e9a3c456a7bfaebead2131fcef19679cb1d5

notebooks/visualization/src/com/intellij/notebooks/visualization/ui/EditorCellActionsToolbarManager.kt

@@ -34,8 +34,6 @@ class EditorCellActionsToolbarManager(private val editor: EditorEx, private val
 
   fun showToolbar(targetComponent: JComponent) {
     val actionGroup = getActionGroup(cell.interval.type) ?: return
-    if (targetComponent.width == 0 || targetComponent.height == 0) return
-
     removeToolbar()
 
     toolbar = JupyterCellActionsToolbar(actionGroup, targetComponent)

notebooks/visualization/src/com/intellij/notebooks/visualization/ui/EditorCellView.kt

@@ -266,7 +266,6 @@ class EditorCellView(
     updateFolding()
     updateRunButtonVisibility()
     myEditorCellFrameManager?.updateMarkdownCellShow(mouseOver || selected)
-    updateCellActionsToolbarVisibility()
   }
 
   fun mouseEntered() {
@@ -274,7 +273,6 @@ class EditorCellView(
     updateFolding()
     updateRunButtonVisibility()
     myEditorCellFrameManager?.updateMarkdownCellShow(mouseOver || selected)
-    updateCellActionsToolbarVisibility()
   }
 
   inline fun <reified T : Any> getExtension(): T? {
@@ -376,7 +374,7 @@ class EditorCellView(
 
   private fun updateCellActionsToolbarVisibility() {
     input.cellActionsToolbar ?: return
-    when (selected || mouseOver) {
+    when (selected) {
       true -> {
         val targetComponent = _controllers.filterIsInstance<DataProviderComponent>().firstOrNull()?.retrieveDataProvider() ?: return
         input.cellActionsToolbar.showToolbar(targetComponent)