fix(analytics-types): allow an array of objects as identity value type

[Mercy811]

Summary

Jira: AMP-114927

Allow an array of objects as identify value type

    const identify = new Identify();
    const propertyValue = [
      {
        key1: 'value1',
        key2: 'value2',
      },
      {
        key1: 'value3',
        key2: 'value4',
      },
    ];
    identify.set('PROPERTY_NAME', propertyValue);

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