source instagram: ask for pages_show_list,pages_read_engagement scopes during oauth flow (#15802)

Author: sherifnada

airbyte-oauth/src/main/java/io/airbyte/oauth/flows/facebook/InstagramOAuthFlow.java

@@ -12,7 +12,7 @@
 // Instagram Graph API require Facebook API User token
 public class InstagramOAuthFlow extends FacebookMarketingOAuthFlow {
 
-  private static final String SCOPES = "ads_management,instagram_basic,instagram_manage_insights";
+  private static final String SCOPES = "ads_management,instagram_basic,instagram_manage_insights,pages_show_list,pages_read_engagement";
 
   public InstagramOAuthFlow(final ConfigRepository configRepository, final HttpClient httpClient) {
     super(configRepository, httpClient);

airbyte-oauth/src/test/java/io/airbyte/oauth/flows/facebook/InstagramOAuthFlowTest.java

@@ -20,7 +20,7 @@ protected BaseOAuthFlow getOAuthFlow() {
 
   @Override
   protected String getExpectedConsentUrl() {
-    return "https://www.facebook.com/v12.0/dialog/oauth?client_id=test_client_id&redirect_uri=https%3A%2F%2Fairbyte.io&state=state&scope=ads_management%2Cinstagram_basic%2Cinstagram_manage_insights";
+    return "https://www.facebook.com/v12.0/dialog/oauth?client_id=test_client_id&redirect_uri=https%3A%2F%2Fairbyte.io&state=state&scope=ads_management%2Cinstagram_basic%2Cinstagram_manage_insights%2Cpages_show_list%2Cpages_read_engagement";
   }
 
   @Override