chore: add storybook-static folder to .gitignore (#5075)

#### What type of PR is this?

/area console

#### What this PR does / why we need it:

storybook-static 文件夹为 Storybook 的构建目录，此 PR 将此文件夹添加到 .gitignore

#### Does this PR introduce a user-facing change?

```release-note
None
```

console/.gitignore

@@ -29,3 +29,4 @@ coverage
 *.sw?
 
 !src/build
+storybook-static