Feature/fix country selection from prepopulated info

[minhazur-piash]

Summary

Add an Address page's country list wasn't showing prepopulated selectedCountry. The fix was just placing shippingInfoWidget.populateShippingInfo(shippingInformation) at the last of fun bind() method of PaymentFlowPagerAdapter class as calling setAllowedCountryCodes() refreshes selected country with first item.

Motivation

To fix this open issue #2010

Testing

I have written the following test.

  @Test
    fun getSelectedShippingCountry_whenShippingInfoProvided_returnsExpected() {
        shippingInfoWidget.setAllowedCountryCodes(setOf("US", "CA"))
        shippingInfoWidget.populateShippingInfo(SHIPPING_INFO_CA)
        assertEquals(stateEditText.text.toString(), "Ontario")
        assertEquals(cityEditText.text.toString(), "Ontario")
        assertEquals(addressLine1EditText.text.toString(), "185 Berry St")
        assertEquals(addressLine2EditText.text.toString(), "10th Floor")
        assertEquals(phoneEditText.text.toString(), "416-759-0260")
        assertEquals(postalEditText.text.toString(), "M4B1B5")
        assertEquals(nameEditText.text.toString(), "Fake Name")
        assertEquals(countryAutoCompleteTextView.selectedCountry?.code, "CA")
    }

[mshafrir-stripe]

@minhazur-piash thanks for posting this PR!

[minhazur-piash]

Thanks for approving the PR. Please, let me know how I can merge now.

[mshafrir-stripe]

@minhazur-piash I just merged it, thanks again.