fix(note_tooltip): redundant padding on empty note with no children

Author: eliandoran

src/public/app/services/content_renderer.ts

@@ -238,12 +238,16 @@ async function renderMermaid(note: FNote, $renderedContent: JQuery<HTMLElement>)
  * @param {FNote} note
  * @returns {Promise<void>}
  */
-async function renderChildrenList($renderedContent: JQuery<HTMLElement>, note: FNote) {
+async function renderChildrenList($renderedContent: JQuery<HTMLElement>, note: FNote) {    
+    let childNoteIds = note.getChildNoteIds();
+
+    if (!childNoteIds.length) {
+        return;
+    }
+
     $renderedContent.css("padding", "10px");
     $renderedContent.addClass("text-with-ellipsis");
 
-    let childNoteIds = note.getChildNoteIds();
-
     if (childNoteIds.length > 10) {
         childNoteIds = childNoteIds.slice(0, 10);
     }