DTPOMERSER-1274 Select Default currency code

[akalichety-hw]

https://paypal.atlassian.net/browse/DTPOMERSER-1274
This PR has
loadCurrency-Modified this method to display defaultcurrencyCode if exists else display first currency from the list.
loadCurrencySelection-Modified this method to select defaultcurrencyCode if exists else display first currency from the list.
Created helper method to get defaultcurrency based on the selected country.

Testing:
Used UAT program.

Graphql query:

query {
	 countries (idToken: "{% response 'body', 'req_93bfdcdd1d484d0ca05a6cf019ef04e7', '$.token', 'never', 60 %}") {
		      nodes {
                       code
                       name
                       defaultCurrencyCode
                         currencies {
                           nodes {
                             code
                             name
                         }
                       }
                     }
                   }
                 }

Result:

{
	"data": {
		"countries": {
			"nodes": [
				{
					"code": "CA",
					"name": "Canada",
					"defaultCurrencyCode": "CAD",
					"currencies": {
						"nodes": [
							{
								"code": "CAD",
								"name": "CAD"
							},
							{
								"code": "USD",
								"name": "USD"
							}
						]
					}
				},
				{
					"code": "MX",
					"name": "Mexico",
					"defaultCurrencyCode": "MXN",
					"currencies": {
						"nodes": [
							{
								"code": "MXN",
								"name": "MXN"
							}
						]
					}
				},
				{
					"code": "SE",
					"name": "Sweden",
					"defaultCurrencyCode": "SEK",
					"currencies": {
						"nodes": [
							{
								"code": "EUR",
								"name": "EUR"
							},
							{
								"code": "SEK",
								"name": "SEK"
							}
						]
					}
				},
				{
					"code": "TW",
					"name": "Taiwan",
					"defaultCurrencyCode": "TWD",
					"currencies": {
						"nodes": [
							{
								"code": "TWD",
								"name": "TWD"
							},
							{
								"code": "USD",
								"name": "USD"
							}
						]
					}
				},
				{
					"code": "US",
					"name": "United States",
					"defaultCurrencyCode": "USD",
					"currencies": {
						"nodes": [
							{
								"code": "CAD",
								"name": "CAD"
							},
							{
								"code": "EUR",
								"name": "EUR"
							},
							{
								"code": "USD",
								"name": "USD"
							}
						]
					}
				}
			]
		}
	}
}

[akalichety-hw]

Testing video

Screen.Recording.2025-03-19.at.10.56.07.PM.mov

[shubh-hw-dev]

MINOR: do not do comments inline, always do them above the line you're commenting for

[shubh-hw-dev]

lgtm!

[grmeyer-hw-dev]

I noticed this code is duplicated, Can you create method to get country from HyperwalletTransferMethodConfigurationKey?

[grmeyer-hw-dev]

Just to keep consistent, Let's assign final in all parameters

[grmeyer-hw-dev]

Let me release Core-SDK, than you can also bump the Core-SDK version to get green CI build

[grmeyer-hw-dev]

Great work !!!