title: set a default value on select dropdown using using angular formly
body: <p><strong>Hi , how do we set a default value for a select field using angular formly library</strong></p>
  <pre><code>    this.uiFormFactory.createSelect(
            Location,
            this.store.select(StoreUtil.getParameterOptions(ParameterId.Location)),
            PersonDetailsFieldLabel.location,
            {
              required: true,
              select: { searchable: true, virtualScroll: true, defaultValue: 'Home' },
              readonly: false,
            }
          ),
  </code></pre>