[release-2.2] fix: the width of the code input type is not full (#843)

This is an automated cherry-pick of #838

/assign ruibaby

```release-note
修复 Console 端 FormKit 的 Code 输入框宽度未占满的问题
```

packages/components/src/components/codemirror/Codemirror.vue

@@ -45,6 +45,7 @@ const emit = defineEmits<{
 const customTheme = EditorView.theme({
   "&": {
     height: props.height,
+    width: "100%",
   },
 });