Update status parameter to use WCOrderStatusModel instead.

Author: hafizrahman

example/src/test/java/org/wordpress/android/fluxc/wc/order/WCOrderStoreTest.kt

@@ -641,7 +641,11 @@ class WCOrderStoreTest {
                 .thenReturn(BulkUpdateOrderStatusResponsePayload(successResponses))
 
             // When
-            val result = orderStore.batchUpdateOrdersStatus(site, orderIds, newStatus)
+            val result = orderStore.batchUpdateOrdersStatus(
+                site,
+                orderIds,
+                WCOrderStatusModel(COMPLETED.value)
+            )
 
             // Then
             assertThat(result.isError).isFalse()
@@ -687,7 +691,11 @@ class WCOrderStoreTest {
                 .thenReturn(BulkUpdateOrderStatusResponsePayload(mixedResponses))
 
             // When
-            val result = orderStore.batchUpdateOrdersStatus(site, orderIds, newStatus)
+            val result = orderStore.batchUpdateOrdersStatus(
+                site,
+                orderIds,
+                WCOrderStatusModel(COMPLETED.value)
+            )
 
             // Then
             assertThat(result.isError).isFalse()

plugins/woocommerce/src/main/kotlin/org/wordpress/android/fluxc/store/WCOrderStore.kt

@@ -1174,9 +1174,9 @@ class WCOrderStore @Inject constructor(
     suspend fun batchUpdateOrdersStatus(
         site: SiteModel,
         orderIds: List<Long>,
-        newStatus: String
+        newStatus: WCOrderStatusModel
     ): WooResult<UpdateOrdersStatusResult> {
-        val result = wcOrderRestClient.batchUpdateOrdersStatus(site, orderIds, newStatus)
+        val result = wcOrderRestClient.batchUpdateOrdersStatus(site, orderIds, newStatus.statusKey)
 
         return if (!result.isError) {
             val orders = result.response