fix: split size by byte when file bigger than max size

.github/create-pr-comment-file.sh

@@ -72,6 +72,13 @@ for file in ${comment_files_csplit}; do
     current_size=$((current_size + file_size))
 
     echo "Added '$file' to '$OUTPUT_FILE'. Current size: $current_size bytes."
+
+    # if output file is bigger than max size, split the file by byte
+    if (( $(stat -c %s "$OUTPUT_FILE") > MAX_SIZE )); then
+      echo "split file ${OUTPUT_FILE} by byte because its file is bigger than ${MAX_SIZE} byte"
+      split -b ${MAX_SIZE} ${OUTPUT_FILE} ${OUTPUT_FILE}_
+    fi
+
   else
     echo "'$file' is not a valid file. Skipping."
   fi