windicss does not apply all styles when after build

[cawa-93]

Describe the bug
Sometimes windicss does not apply all styles when you first dev server run. In such cases, it is enough to reload the page and then all styles are applied as expected.

Minimal Reproductions

1. Clone repo: https://github.com/cawa-93/windicss-issue
2. Run npm run dev
3. After server start await a few seconds.
4. Open dev server url http://localhost:3000/
5. You can see that the styles were not applied. Unfortunately, in the demonstration repo, this problem is not reproduced every time and I do not understand why, in a larger project it happens every time. You may have to try several times before the problem recurs. . If reload page then styles will be loaded
   

Another Minimal Reproductions

1. Clone repo
2. Run npm run dev
3. Open dev server url http://localhost:3000/
4. Reload the browser page to ensure that the styles are applied.
5. Restart the dev server without closing the page in the browser. You can see that the opened page has been updated and the styles are missing.

Versions

• vite-plugin-windicss: 1.4.5
• vite: 2.5.4
• framework(vue/react/svelte/etc): none

Additonal Context
OS: Windows 10
Browser: Firefox 93.0b9

[cawa-93]

Same as #243