initValue can be Element

[BrunoQuaresma]

I'm using initValue passing an element but the warning is diplayed in development. Maybe remove this validation will be nice instead of require a string. ;)

Example.:

initValue={
              <Text>
                Filtre por
                <Text style={{ fontWeight: 'bold' }}>
                  {' ' + filter.description.toLowerCase()}
                </Text>
              </Text>
            }