fix: broken grafana tests (#2696)

## Description

- Fixes nightly EKS and HA k3d CI failures introduced by the Grafana 12
→ 13 upgrade (#2584)
- `validate namespace dashboard` and `validate loki dashboard` both
timed out waiting for template variable dropdown options to populate
- Grafana 13 lazy-loads variable values, which means clicking a dropdown
no longer reliably triggers the Prometheus query to populate options, so
tests waiting on `authservice-sidecar-test-app` to appear would time out
- Fix: after navigating to each dashboard, re-navigate with
`var-namespace` set directly in the URL; Grafana resolves explicit URL
params synchronously with no query required



## Type of change

- [x] Bug fix (non-breaking change which fixes an issue)
- [ ] New feature (non-breaking change which adds functionality)
- [ ] Other (security config, docs update, etc)



## Checklist before merging

- [x] Test, docs, adr added or updated as needed
- [x] [Contributor
Guide](https://github.com/defenseunicorns/uds-core/blob/main/CONTRIBUTING.md)
followed

Author: chance-coleman

test/playwright/grafana.test.ts

@@ -69,17 +69,14 @@ test("validate namespace dashboard", async ({ page }) => {
   await test.step("check dashboard", async () => {
     await gotoGrafana(page, `/dashboards`);
     await page.click('text="Kubernetes / Compute Resources / Namespace (Pods)"');
-    await page
-      .getByTestId(
-        "data-testid Dashboard template variables Variable Value DropDown value link text authservice",
-      )
-      .click();
-    if (!fullCore) {
-      // Check grafana if not a full core deploy
-      await page.getByRole("option", { name: "grafana" }).click();
-      return;
-    }
-    await page.getByRole("option", { name: "authservice-sidecar-test-app" }).click();
+    // Grafana 13+ does not eagerly load dropdown options even when a variable has a
+    // preselected value. Re-navigate with the namespace set in the URL to bypass this.
+    await page.waitForURL(/\/d\//);
+    const url = new URL(page.url());
+    url.searchParams.set("var-namespace", fullCore ? "authservice-sidecar-test-app" : "grafana");
+    await page.goto(url.toString());
+    await closeGrafanaModals(page);
+    await expect(page.locator('[data-testid="data-testid dashboard controls"]')).toBeVisible();
   });
 });
 
@@ -90,17 +87,14 @@ test("validate loki dashboard", async ({ page }) => {
     await gotoGrafana(page, `/dashboards`);
     await page.getByPlaceholder("Search for dashboards and folders").fill("Loki");
     await page.click('text="Loki Dashboard quick search"');
-    await page
-      .getByTestId(
-        "data-testid Dashboard template variables Variable Value DropDown value link text authservice",
-      )
-      .click();
-    if (!fullCore) {
-      // Check grafana if not a full core deploy
-      await page.getByRole("option", { name: "grafana" }).click();
-    } else {
-      await page.getByRole("option", { name: "authservice-sidecar-test-app" }).click();
-    }
+    // Grafana 13+ lazy-loads variables with no saved current value — clicking the empty
+    // dropdown does not reliably trigger the Prometheus query to populate options.
+    // Re-navigate with the namespace set in the URL to bypass lazy loading entirely.
+    await page.waitForURL(/\/d\//);
+    const url = new URL(page.url());
+    url.searchParams.set("var-namespace", "authservice-sidecar-test-app");
+    await page.goto(url.toString());
+    await closeGrafanaModals(page);
     await expect(
       page
         .getByTestId("data-testid Panel header Logs Panel")