fix: fixed for loop and condition for cluster permissions

Author: owlleg6

permissions.tf

@@ -4,19 +4,21 @@ locals {
       scope = param.scope_name, principal = permission.principal, permission = permission.permission
     }] if param.acl != null
   ])
+
+  cluster_permissions_objects_list = [for k, v in var.iam : {
+    cluster_id = var.default_cluster_id, group_name = k, permission_level = v.default_cluster_permission
+    } if v.default_cluster_permission != null
+  ]
 }
 
 resource "databricks_permissions" "default_cluster" {
-  for_each = length(var.default_cluster_id) == 0 ? {} : {
-    for k, v in var.iam : k => v.default_cluster_permission
-    if v.default_cluster_permission != null
-  }
+  for_each = { for entry in local.cluster_permissions_objects_list : "${entry.group_name}.${entry.permission_level}" => entry }
 
-  cluster_id = var.default_cluster_id
+  cluster_id = each.value.cluster_id
 
   access_control {
-    group_name       = databricks_group.this[each.key].display_name
-    permission_level = each.value
+    group_name       = databricks_group.this[each.value.group_name].display_name
+    permission_level = each.value.permission_level
   }
 }