fix(feat.theme.stories.js): add name,The theme name is missing, and cannot be accurately hit after the menu is switched

[xudihui]

Thanks for writing so many stories. This experience is really great. they covers many business scenarios and is very convenient for component testing.

🤔 This is a ...

• [ ] New feature
• [ ] Bug fix
• [ ] Site / documentation update
• [ ] Demo update
• [ ] Component style update
• [ ] TypeScript definition update
• [ ] Bundle size optimization
• [ ] Performance optimization
• [ ] Enhancement feature
• [ ] Internationalization
• [ ] Refactoring
• [ ] Code style optimization
• [x] Test Case
• [ ] Branch merge
• [ ] Other (about what?)

🔗 Related issue link

💡 Background and solution

cannot be accurately hit after the menu is switched as shown in the following figure:

📝 Changelog

Language	Changelog
🇺🇸 English
🇨🇳 Chinese

☑️ Self Check before Merge

⚠️ Please check all items below before review. ⚠️

• [X] Doc is updated/provided or not needed
• [X] Demo is updated/provided or not needed
• [X] TypeScript definition is updated/provided or not needed
• [X] Changelog is provided or not needed