Fix note crash when selecting pan tool

src/components/map/MapNotes.js

@@ -69,6 +69,7 @@ function MapNotes({
     }
 
     function handleBrushMove() {
+      if (noteData) {
         const brushPosition = getBrushPosition();
         setNoteData((prev) => ({
           ...prev,
@@ -77,6 +78,7 @@ function MapNotes({
         }));
         setIsBrushDown(true);
       }
+    }
 
     function handleBrushUp() {
       if (noteData) {

src/components/note/Note.js

@@ -104,7 +104,8 @@ function Note({
         (_, i) => i + Math.ceil(noteHeight / 10)
       );
 
-      return sizes.reduce((prev, curr) => {
+      if (sizes.length > 0) {
+        const size = sizes.reduce((prev, curr) => {
           text.fontSize(curr);
           const width = text.getTextWidth() + notePadding * 2;
           if (width < noteWidth) {
@@ -113,8 +114,12 @@ function Note({
             return prev;
           }
         });
+
+        setFontSize(size);
       }
-    setFontSize(findFontSize());
+    }
+
+    findFontSize();
   }, [note, noteWidth, noteHeight, notePadding]);
 
   const textRef = useRef();