fix:

1. 修复登录界面文字被遮挡问题
2. 大字模式关闭后显示异常问题
3. 重新调整大字模式是否开启时的字体显示效果

app-expo/design-tokens.json

@@ -200,6 +200,26 @@
       "lineHeightTight": 24,
       "lineHeightLoose": 29,
       "lineHeightXLoose": 34
+    },
+    "xlarge": {
+      "headingLarge": 44,
+      "headingMedium": 33,
+      "headingSmall": 28,
+      "titleLarge": 28,
+      "titleMedium": 25,
+      "titleSmall": 21,
+      "bodyLarge": 28,
+      "bodyMedium": 26,
+      "bodySmall": 18,
+      "captionLarge": 18,
+      "captionMedium": 16,
+      "captionSmall": 15,
+      "sectionTitle": 16,
+      "badge": 13,
+      "lineHeightNormal": 30,
+      "lineHeightTight": 28,
+      "lineHeightLoose": 34,
+      "lineHeightXLoose": 40
     }
   }
 }