fix(shirelang): add empty intentions check and change error level in …

…ShireIntentionHelper

This commit adds a check for empty intentions in ShireIntentionHelper and changes the logging level from error to warning when the popup fails to show.

shirelang/src/main/kotlin/com/phodal/shirelang/actions/intention/ShireIntentionHelper.kt

@@ -33,14 +33,15 @@ class ShireIntentionHelper : IntentionAction, Iconable {
 
     override fun invoke(project: Project, editor: Editor, file: PsiFile) {
         val intentions = getAiAssistantIntentions(file, null)
+        if (intentions.isEmpty()) return
 
         val title = ShireMainBundle.message("intentions.assistant.popup.title")
         val popupStep = CustomPopupStep(intentions, project, editor, file, title)
         try {
             val popup = JBPopupFactory.getInstance().createListPopup(popupStep)
             popup.showInBestPositionFor(editor)
         } catch (e: Exception) {
-            logger<ShireIntentionHelper>().error("Failed to show popup", e)
+            logger<ShireIntentionHelper>().warn("Failed to show popup", e)
         }
     }