Using `toUpperCase` or `textTransform: 'uppercase'` breaks on an Android controlled TextInput

React Native version: 0.61.4 and lower

Trying to force capitalization of characters inside a TextInput is broken on Android.

• autoCapitalize="characters" doesn't seem to do anything
• Using toUpperCase in the onChangeText hook causes duplication of letters
• Using textTransform: 'uppercase' in styles block causes the same duplication of letters
• Using textTransform: 'uppercase' in a non-controlled TextInput does nothing

Steps To Reproduce

1. Create a controlled TextInput and either use onTextChanged to modify the text to uppercase or use text transform in the styles block
2. Type multiple lowercase characters into the text box

Describe what you expected to happen:
Characters should be capitalized

What actually happens:
Characters are capitalized and duplicated

Snack, code example, screenshot, or link to a repository:
https://snack.expo.io/@nmi09/rn-android-capitalize-input-bug

从链接的 Snack 复现和受控的 Android TextInput 入口开始，测试 autoCapitalize、onChangeText 转换以及 textTransform: 'uppercase'。确认小写输入会被转换为大写且不会产生重复字符，同时检查报告的非受控行为。