fix(Editor): emit modified fileNode size on save

Signed-off-by: Maksim Sukharev <antreesy.web@gmail.com>

Author: Antreesy

src/components/Editor.vue

@@ -734,6 +734,7 @@ export default defineComponent({
 		onSave() {
 			if (this.fileNode) {
 				this.fileNode.mtime = new Date()
+				this.fileNode.size = new Blob([this.serialize()]).size
 				emit('files:node:updated', this.fileNode)
 			}
 			this.$nextTick(() => {