fix(frontend/projects): don't list same customer more than once

frontend/app/projects/controller.js

@@ -3,6 +3,7 @@ import { action } from "@ember/object";
 import { inject as service } from "@ember/service";
 import { tracked } from "@glimmer/tracking";
 import { dropTask, lastValue, task } from "ember-concurrency";
+import uniqBy from "lodash.uniqby";
 import ProjectValidations from "timed/validations/project";
 import TaskValidations from "timed/validations/task";
 
@@ -33,11 +34,10 @@ export default class ProjectsController extends Controller {
   }
 
   get customers() {
-    return [
-      ...(new Set(
-        this.projects?.map((p) => p.get("customer")).filter(Boolean)
-      ) ?? []),
-    ].toSorted((c) => c.get("name"));
+    return uniqBy(
+      this.projects?.map((p) => p?.get("customer")).filter(Boolean) ?? [],
+      (c) => c.get("id")
+    ).toSorted((c) => c.get("name"));
   }
 
   @task

frontend/package.json

@@ -116,6 +116,7 @@
     "fast-redact": "3.3.0",
     "graphql": "16.8.1",
     "loader.js": "4.7.0",
+    "lodash.uniqby": "^4.7.0",
     "miragejs": "^0.1.48",
     "prettier": "2.8.8",
     "qunit": "2.19.4",