Fix query error in workflow cost attribution dashboard json (#204)

Author: anhhchu

.gitignore

@@ -0,0 +1,5 @@
+
+.databricks
+databricks.yml
+.DS_Store
+**/.DS_Store

product_demos/Unity-Catalog/uc-04-system-tables/_resources/dashboards/worklow-analysis.lvdash.json

@@ -44,7 +44,7 @@
         "    jr.period_end_time,\n",
         "    jr.trigger_type,\n",
         "    jr.run_type,\n",
-        "    COALESCE(jr.result_state, 0) AS result_state,\n",
+        "    jr.result_state AS result_state,\n",
         "    jr.compute_ids,\n",
         "    (UNIX_TIMESTAMP(jr.period_end_time) - UNIX_TIMESTAMP(jr.period_start_time)) / 60 AS duration_minutes,\n",
         "    CASE WHEN jr.result_state = 'SUCCEEDED' THEN jr.run_id ELSE NULL END AS success_run_ids,\n",
@@ -317,7 +317,7 @@
         "    jr.period_end_time,\n",
         "    jr.trigger_type,\n",
         "    jr.run_type,\n",
-        "    nvl(jr.result_state, 0) as result_state,\n",
+        "    jr.result_state as result_state,\n",
         "    jr.compute_ids,\n",
         "    (\n",
         "      UNIX_TIMESTAMP(jr.period_end_time) - UNIX_TIMESTAMP(jr.period_start_time)\n",