LegendControl of the `charites serve` command has broken

[yuiseki]

Describe the bug

• MaplibreLegendControl and MapboxLegendControl of the charites serve command is currently broken

To Reproduce
Steps to reproduce the behavior:

1. Pull newest main branch of charites
2. npm ci
3. npm run build
4. charites serve test/data/style.yml
5. Open http://localhost:8080/
6. Open Chrome Dev Tool
7. See console log

Expected behavior

• MapboxLegendControl has shown

Screenshots

Before

After

Charites Version:

• Charites version: 0.2.0

Desktop (please complete the following information):

• OS: Windows 10 Pro
• Browser: Google Chrome 107.0.5304.107

Additional context
I will immediately submit pull request that fix this issue

[UBUKAWA Taro]

Thank you for this improvement! It is really helpful!