removed defaultprops from DatePickerIOS

[turker0]

Summary

Removed defaultProps from DatePickeriOS #31605 .

Changelog

[iOS] [Removed] - Removed defaultProps from DatePickerIOS.ios.js

Test Plan

Build & render DatePickeriOS on RNTester app successfully.

[analysis-bot]

Platform	Engine	Arch	Size (bytes)	Diff
ios	-	universal	n/a	--

Base commit: cb610dd
Branch: main

[lunaleaps]

We still need to set the default value of this prop. So for every access of props.mode, if no value is set it still needs to be datetime -- the thing we want to remove is depending on defaultProps static type as a construct used in React.

You can take a look at destructuring with a default value here: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Operators/Destructuring_assignment

[lunaleaps]

In addition, can you add a snapshot test that ensures the default value is used? You can take a look at an example component snapshot test from VirtualizedList-test.js: https://github.com/facebook/react-native/blob/dc80b2dcb52fadec6a573a9dd1824393f8c29fdc/Libraries/Lists/__tests__/VirtualizedList-test.js

[analysis-bot]

Platform	Engine	Arch	Size (bytes)	Diff
android	hermes	arm64-v8a	8,527,058	+0
android	hermes	armeabi-v7a	7,830,789	+0
android	hermes	x86	8,996,981	+0
android	hermes	x86_64	8,942,879	+0
android	jsc	arm64-v8a	9,841,448	+0
android	jsc	armeabi-v7a	8,806,393	+0
android	jsc	x86	9,791,324	+0
android	jsc	x86_64	10,393,964	+0

Base commit: cb610dd
Branch: main