Add disposition match for NULL values

definitions/staging/stg_calls.sqlx

@@ -21,7 +21,7 @@ select DAY_OF_WEEK,
         CALL_ID,
         CAMPAIGN,
         SKILL,
-        DISPOSITION,
+        COALESCE(DISPOSITION, '[Not Defined]') AS DISPOSITION,
         AGENT_NAME,
         ANI,
         CALL_TIME,

definitions/staging/stg_digital.sqlx

@@ -18,7 +18,7 @@ select  *,
 from ${ref("pphe_five9_raw","digital_*")}
 ${ when(incremental(), `where _TABLE_SUFFIX = FORMAT_DATE('%Y%m%d',current_date("Europe/Amsterdam"))`) })
 select  AGENT_NAME,
-        DISPOSITION,
+        COALESCE(DISPOSITION, '[Not Defined]') AS DISPOSITION,
         RESPONSE_TIME,
         EMAIL_QUEUE_TIME,
         HANDLE_TIME,