fix: open describe editor in EDT (redhat-developer#842)

Signed-off-by: Andre Dietisheim <[email protected]>

Author: adietish

src/main/kotlin/com/redhat/devtools/intellij/kubernetes/editor/describe/DescriptionViewerFactory.kt

@@ -12,6 +12,7 @@ package com.redhat.devtools.intellij.kubernetes.editor.describe
 
 import com.intellij.openapi.application.ApplicationManager
 import com.intellij.openapi.application.WriteAction
+import com.intellij.openapi.application.invokeLater
 import com.intellij.openapi.fileEditor.FileDocumentManager
 import com.intellij.openapi.fileEditor.FileEditor
 import com.intellij.openapi.fileEditor.FileEditorManager
@@ -96,7 +97,10 @@ open class DescriptionViewerFactory protected constructor() {
     }
 
     private fun openNewEditor(file: VirtualFile, project: Project) {
-        FileEditorManager.getInstance(project).openFile(file, true)
+        val fileEditorManager = FileEditorManager.getInstance(project) ?: return
+        invokeLater {
+            fileEditorManager.openFile(file, true)
+        }
     }
 
     private fun getOpenedEditor(resource: HasMetadata, project: Project): FileEditor? {