fix time descriptor

Author: michaelmattig

services/src/api/handlers/workflows.rs

@@ -1110,7 +1110,9 @@ mod tests {
                 "spatialReference": "EPSG:4326",
                 "time": {
                     "bounds": null,
-                    "dimension": null
+                    "dimension": {
+                        "type": "irregular",
+                    }
                 },
                 "spatialGrid": {
                     "descriptor": "source",
@@ -1389,6 +1391,7 @@ mod tests {
                 "spatialReference": "EPSG:4326",
                 "time": {
                     "dimension": {
+                        "type": "regular",
                         "origin": 0,
                         "step": {
                             "granularity": "months",

test_data/raster/multi_tile/metadata/dataset_irregular.json

@@ -22,7 +22,9 @@
             "start": "2025-01-01T00:00:00.000Z",
             "end": "2025-05-01T00:00:00.000Z"
           },
-          "dimension": null
+          "dimension": {
+            "type": "irregular"
+          }
         },
         "spatialGrid": {
           "spatialGrid": {

test_data/raster/multi_tile/metadata/dataset_regular.json

@@ -23,6 +23,7 @@
             "end": "2025-05-01T00:00:00.000Z"
           },
           "dimension": {
+            "type": "regular",
             "origin": "2014-01-01T00:00:00.000Z",
             "step": {
               "granularity": "months",