feat(module: input): add EventCallback OnClear

[Abin-Liu]

add EventCallback OnClear to component Input as a parameter it is called when the input contents are cleared by clicking the clear icon

🤔 This is a ...

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

🔗 Related issue link

In some cases, we need to be notified when the user clears input contents by clicking the clear icon, for example if a keywork-searching was in effect, we need to reset the search results. But current there's no callback defined for this event.

💡 Background and solution

The solution is quite simple, just add an event callback into component Input, and invoke it when user clears the contents.

[Parameter] public EventCallback OnClear { get; set; }

📝 Changelog

Language	Changelog
🇺🇸 English
🇨🇳 Chinese

☑️ Self Check before Merge

⚠️ Please check all items below before review. ⚠️

• Doc is updated/provided or not needed
• Demo is updated/provided or not needed
• Changelog is provided or not needed

[github-actions]

[dnfadmin]

All CLA requirements met.