fix: removed csvFormat() and kept UTC format (#3426)

* fix: removed csvFormat() and kept UTC format

* Fix date-time formatting for CSV export

* fix: Export timestamps in user's local time instead of UTC

shared/domain/src/main/java/com/ivy/domain/usecase/csv/ExportCsvUseCase.kt

@@ -4,7 +4,6 @@ import android.net.Uri
 import arrow.core.Either
 import com.ivy.base.model.TransactionType
 import com.ivy.base.threading.DispatchersProvider
-import com.ivy.base.time.convertToLocal
 import com.ivy.data.file.FileSystem
 import com.ivy.data.model.Account
 import com.ivy.data.model.AccountId
@@ -24,6 +23,7 @@ import org.apache.commons.text.StringEscapeUtils
 import java.text.DecimalFormat
 import java.text.DecimalFormatSymbols
 import java.time.Instant
+import java.time.ZoneId
 import java.time.format.DateTimeFormatter
 import java.util.Locale
 import javax.inject.Inject
@@ -187,8 +187,9 @@ class ExportCsvUseCase @Inject constructor(
         id = id
     )
 
-    private fun Instant.csvFormat(): String = convertToLocal()
-        .format(DateTimeFormatter.ISO_LOCAL_DATE_TIME)
+    private fun Instant.csvFormat(): String {
+        return this.atZone(ZoneId.of("UTC")).toLocalDateTime().format(DateTimeFormatter.ISO_LOCAL_DATE_TIME)
+    }
 
     private fun Double.csvFormat(): String = DecimalFormat(NUMBER_FORMAT).apply {
         decimalFormatSymbols = DecimalFormatSymbols.getInstance(Locale.ENGLISH)