style(ContentEditor): 将默认字体大小从30rpx调整为40rpx

统一修改文本组件的默认字体大小，提高可读性

jeecgboot-vue3/src/views/applet/course-page/components/ContentEditor.vue

@@ -176,7 +176,7 @@ watch(
   componentsRef.value = cloned.map((c: any) => {
     if (c?.type === 'text') {
       if (!c.style) c.style = {};
-      if (!c.style.fontSize) c.style.fontSize = '30rpx';
+      if (!c.style.fontSize) c.style.fontSize = '40rpx';
       if (!c.style.color) c.style.color = '#333333';
       if (!c.style.fontFamily) c.style.fontFamily = 'SimSun';
       if (!c.style.fontWeight) c.style.fontWeight = 'normal';
@@ -208,7 +208,7 @@ function addTextContent() {
     content: '',
     language: 'zh',
     style: {
-      fontSize: '30rpx',
+      fontSize: '40rpx',
       color: '#333333',
       fontFamily: 'SimSun',
     },
@@ -272,9 +272,9 @@ function ensureStyle(component: any) {
 
 function getFontSizeNumber(component: any) {
   const s = component.style?.fontSize;
-  if (!s) return 30;
+  if (!s) return 40;
   const m = typeof s === 'string' ? s.match(/(\d+)/) : null;
-  return m ? Number(m[1]) : 30;
+  return m ? Number(m[1]) : 40;
 }
 
 function setFontSizeNumber(component: any, value: number) {
@@ -282,7 +282,7 @@ function setFontSizeNumber(component: any, value: number) {
   // 确保value是有效数字，然后统一以 rpx 保存
   const numValue = Number(value);
   if (isNaN(numValue) || numValue <= 0) {
-    component.style.fontSize = '30rpx'; // 默认值
+    component.style.fontSize = '40rpx'; // 默认值
   } else {
     component.style.fontSize = `${numValue}rpx`;
   }