passing country as prop instead of countryCode as it is not unique

[appy9]

country code is not a unique key that can be passed, so updating the component to pass country

Issue Usecase: UK vs Jersey

 {
    id: 121,
    name: "United Kingdom",
    url_name: "gb",
    country_code: "+44",
    operational: true,
    zones: ["Europe/London"]
 },
 {
    id: 57,
    name: "Jersey",
    url_name: "je",
    country_code: "+44",
    operational: false,
    zones: ["Europe/London"]
 }

https://deploy-preview-403--pensive-johnson-e2d194.netlify.app/?path=/story/components-phonenumberinput--material

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[codecov]

Codecov Report

Merging #403 (74506c0) into master (6662ecf) will not change coverage.
The diff coverage is 100.00%.

@@           Coverage Diff           @@
##           master     #403   +/-   ##
=======================================
  Coverage   83.25%   83.25%           
=======================================
  Files          84       84           
  Lines        1362     1362           
  Branches      270      263    -7     
=======================================
  Hits         1134     1134           
- Misses        193      194    +1     
+ Partials       35       34    -1     

Impacted Files	Coverage Δ
...ges/pebble-web/src/components/PhoneNumberInput.tsx	95.00% <100.00%> (ø)
packages/pebble-web/src/components/Toast.tsx	91.66% <0.00%> (ø)

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[zhirzh]

this change wont be backwards compatible and require massive rewrites in consumer code

[appy9]

this change wont be backwards compatible and require massive rewrites in consumer code

without this change we are not able to identify UK numbers from Jersey. Also, we can't correctly validate UK numbers because Jersey gets selected. The original component is actually wrong in returning just the country code.