[Web LA] Fix default transitions.

[m-bert]

Summary

Yesterday we've discovered that some basic transitions don't work on web anymore. Turns out that animationName was undefined, therefore transitions were not created.

This PR adds presetName field into transitions, so we can easily obtain their name.

Note

Similar thing was done in #5562, so I believe that we can stick to this convention.

Test plan

Tested on the following code:

import Animated, {
  BounceInLeft,
  FadeOutRight,
  FadingTransition,
} from 'react-native-reanimated';
import { Button, StyleSheet, View } from 'react-native';

import React from 'react';

export default function BasicLayoutAnimation() {
  const [state, setState] = React.useState(false);
  const [visible, setVisible] = React.useState(true);

  return (
    <View style={styles.container}>
      <Button onPress={() => setVisible(!visible)} title="Create/Remove" />
      <Button onPress={() => setState(!state)} title="Update" />
      {visible && (
        <Animated.View
          entering={BounceInLeft}
          layout={FadingTransition}
          exiting={FadeOutRight.duration(500)}
          style={[
            styles.box,
            {
              marginLeft: state ? 200 : 0,
              backgroundColor: state ? 'red' : 'blue',
            },
          ]}
        />
      )}
    </View>
  );
}

const styles = StyleSheet.create({
  container: {
    flex: 1,
    alignItems: 'center',
    marginTop: 300,
  },
  box: {
    width: 100,
    height: 100,
  },
});