Modify custom icon size

[Donny Wang]

Describe the bug

When I tried to change the size using font-size I found no change in the icon.

<i-inline-async style="font-size: 40px" />

Reproduction

https://github.com/antfu/unplugin-icons/blob/main/examples/vite-vue3/App.vue#L44

System Info

  System:
    OS: Windows 10 10.0.19044
    CPU: (16) x64 Intel(R) Core(TM) i7-10700 CPU @ 2.90GHz
    Memory: 5.08 GB / 15.72 GB
  Binaries:
    Node: 16.13.1 - E:\nodejs\node.EXE
    Yarn: 1.22.18 - E:\nodejs\node_global\node_modules\yarn\bin\yarn.CMD
    npm: 8.1.2 - E:\nodejs\npm.CMD
  Browsers:
    Edge: Spartan (44.19041.1266.0), Chromium (110.0.1587.46)
    Internet Explorer: 11.0.19041.1566

Used Package Manager

npm

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