修复一开始字幕为空设置默认字体无效的BUG

src/components/SubtitleDialog.vue

@@ -130,6 +130,7 @@
                   tinymce-script-src="tinymce/tinymce.min.js"
                   :init="editor_config"
                   v-model="subtitle.text"
+                  @init="(event, editor) => editorInited(event, editor)"
                 />
                 <q-spinner v-else color="primary" size="5em" :thickness="2" />
               </q-item-section>
@@ -220,7 +221,6 @@ export default defineComponent({
         menubar: true,
       },
       font_size_formats: get_font_size_formarts(),
-      content_style: ".mce-content-body {font-size:60pt;}",
       skin: "tinymce-5",
       language: i18n.locale.value == "zh-CN" ? "zh_CN" : "en_US",
       menubar: false,
@@ -262,6 +262,9 @@ export default defineComponent({
         }
         loading.value = false;
       },
+      editorInited(event: any, editor: any) {
+        editor.execCommand("FontSize", false, "60pt");
+      },
       onShow() {
         let success = false;
         const checkZIndex = () => {