fix: validate that instance group exists before adding to workspace (#6777)

* fix: validate that instance group exists before adding to workspace

* Update SQLx metadata

* Update SQLx metadata

* sqlx

* ee repo ref

---------

Co-authored-by: windmill-internal-app[bot] <windmill-internal-app[bot]@users.noreply.github.com>

backend/.sqlx/query-2709e8113527d4cb331c72009e95e2efe4d1b57d5da6051acfb23f89b66434fb.json

@@ -0,0 +1,22 @@
+{
+  "db_name": "PostgreSQL",
+  "query": "SELECT EXISTS(SELECT 1 FROM instance_group WHERE name = $1)",
+  "describe": {
+    "columns": [
+      {
+        "ordinal": 0,
+        "name": "exists",
+        "type_info": "Bool"
+      }
+    ],
+    "parameters": {
+      "Left": [
+        "Text"
+      ]
+    },
+    "nullable": [
+      null
+    ]
+  },
+  "hash": "2709e8113527d4cb331c72009e95e2efe4d1b57d5da6051acfb23f89b66434fb"
+}

backend/.sqlx/query-298f8609319a2928257fd5be60bb37f292c786d2348efe11d19868e5dc8fba11.json

@@ -1,22 +0,0 @@
-{
-  "db_name": "PostgreSQL",
-  "query": "SELECT elem FROM (SELECT unnest($1::TEXT[]) AS elem) AS e\n        WHERE elem NOT IN (SELECT datname FROM pg_catalog.pg_database);",
-  "describe": {
-    "columns": [
-      {
-        "ordinal": 0,
-        "name": "elem",
-        "type_info": "Text"
-      }
-    ],
-    "parameters": {
-      "Left": [
-        "TextArray"
-      ]
-    },
-    "nullable": [
-      null
-    ]
-  },
-  "hash": "298f8609319a2928257fd5be60bb37f292c786d2348efe11d19868e5dc8fba11"
-}

backend/.sqlx/query-a22e166746ee10943c737668aafd548e3adefe5847d2e35331edb61442d0dd92.json

@@ -1,20 +0,0 @@
-{
-  "db_name": "PostgreSQL",
-  "query": "SELECT trim(both '\"' from value::text) FROM global_settings WHERE name = 'ducklake_user_pg_pwd';",
-  "describe": {
-    "columns": [
-      {
-        "ordinal": 0,
-        "name": "btrim",
-        "type_info": "Text"
-      }
-    ],
-    "parameters": {
-      "Left": []
-    },
-    "nullable": [
-      null
-    ]
-  },
-  "hash": "a22e166746ee10943c737668aafd548e3adefe5847d2e35331edb61442d0dd92"
-}

backend/ee-repo-ref.txt

@@ -1 +1 @@
-33bdef405c678616b12084cf779a68a62d1f477e
+19909371503adfa12106dbf261d7f4134989a204