fix(input-number): fix change event triggering mechanism

[oljc]

Types of changes

• New feature
• Bug fix
• Enhancement
• Component style change
• Typescript definition change
• Documentation change
• Coding style change
• Refactoring
• Test cases
• Continuous integration
• Breaking change
• Others

Background and context

数字输入框change事件触发逻辑修复
#2904

最小复现(不聚集输入框直接点击清空按钮)：https://codesandbox.io/p/sandbox/frosty-wing-nhcm6s

Solution

1. handleChange 增加对input change事件类型的区分 如果是Clear就不执行。
2. 修复 modelEvent 为input 时 值变化 change 事件没触发问题

How is the change tested?

Changelog

Component	Changelog(CN)	Changelog(EN)	Related issues
input-number	修复 change 事件触发逻辑	Fix change event triggering mechanism	#2904

Checklist:

• Test suite passes (npm run test)
• Provide changelog for relevant changes (e.g. bug fixes and new features) if applicable.
• Changes are submitted to the appropriate branch (e.g. features should be submitted to feature branch and others
  should be submitted to main branch)

Other information

[Zhangliang5111]

can't get value when you use keyboard

[lanseria]

@LIjiAngChen8
https://stackblitz.com/edit/xvabfn?file=src%2FApp.vue
使用键盘时无法获取值

[oljc]

@LIjiAngChen8 https://stackblitz.com/edit/xvabfn?file=src%2FApp.vue 使用键盘时无法获取值

@lanseria @Zhangliang5111 失去焦点或者回车没有更新值，已经在 #2961 修复这个问题了。

[starzeng]

添加上 model-event="input" 可以解决更新值问题