memberId가 특정 번호일 때 currency와 관계없이 모든 구매 가능한 캔이 출력되도록 수정

src/main/kotlin/kr/co/vividnext/sodalive/can/CanService.kt

@@ -15,10 +15,14 @@ class CanService(
     private val repository: CanRepository,
     private val countryContext: CountryContext
 ) {
-    fun getCans(): List<CanResponse> {
-        val currency = when (countryContext.countryCode) {
-            "KR" -> "KRW"
-            else -> "USD"
+    fun getCans(isNotSelectedCurrency: Boolean): List<CanResponse> {
+        val currency = if (isNotSelectedCurrency) {
+            null
+        } else {
+            when (countryContext.countryCode) {
+                "KR" -> "KRW"
+                else -> "USD"
+            }
         }
         return repository.findAllByStatusAndCurrency(status = CanStatus.SALE, currency = currency)
     }