Fix crash when borderXColor is null on Android

[janicduplessis]

Summary

On android when borderXColor is null it causes the app to crash with:

04-28 17:44:18.021 20114 20213 E unknown:ReactNative: com.facebook.react.bridge.NoSuchKeyException: borderBottomColor
04-28 17:44:18.021 20114 20213 E unknown:ReactNative: 	at com.facebook.react.bridge.ReadableNativeMap.getValue(ReadableNativeMap.java:111)
04-28 17:44:18.021 20114 20213 E unknown:ReactNative: 	at com.facebook.react.bridge.ReadableNativeMap.getValue(ReadableNativeMap.java:115)
04-28 17:44:18.021 20114 20213 E unknown:ReactNative: 	at com.facebook.react.bridge.ReadableNativeMap.getInt(ReadableNativeMap.java:158)
04-28 17:44:18.021 20114 20213 E unknown:ReactNative: 	at com.facebook.react.uimanager.ViewProps.isLayoutOnly(ViewProps.java:246)
04-28 17:44:18.021 20114 20213 E unknown:ReactNative: 	at com.facebook.react.uimanager.NativeViewHierarchyOptimizer.isLayoutOnlyAndCollapsable(NativeViewHierarchyOptimizer.java:482)

Basically it is missing a isNull check on the props map before trying to access the value.

Fixes #22727

Changelog

[Android] [Fixed] - Fix a crash when borderXColor is null

Test Plan

Tested that this no longer crashes <View style={{borderBottomColor: null}} />

[cpojer]

Nice!

[facebook-github-bot]

@cpojer is landing this pull request. If you are a Facebook employee, you can view this diff on Phabricator.

[react-native-bot]

This pull request was successfully merged by @janicduplessis in 9fba855.

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