게시물 라이브 편집 블록 동작 개선

components/content/ContentMarkdownCalloutEditor.vue

@@ -101,6 +101,7 @@ const onBodyCommit = (payload) => {
         block-class="content-markdown-callout-editor__body min-w-0 text-[15px] leading-8 text-[var(--site-text)]"
         enter-mode="multiline"
         plain-text
+        arrow-exit-creates-line
         :source-line="bodySourceLine"
         :source-line-count="bodyLines.length"
         :model-value="modelValue"