Navigation: Fix Home logo always going to /login (#62658)

* only redirect to /login when anonymous access is disabled

* only search for dashboards when not logged in if anon access is enabled

* fix go logic

* add unit tests

packages/grafana-data/src/types/config.ts

@@ -200,6 +200,7 @@ export interface GrafanaConfig {
   /** @deprecated Use `theme2` instead. */
   theme: GrafanaTheme;
   theme2: GrafanaTheme2;
+  anonymousEnabled: boolean;
   featureToggles: FeatureToggles;
   licenseInfo: LicenseInfo;
   http2Enabled: boolean;

packages/grafana-runtime/src/config.ts

@@ -85,6 +85,7 @@ export class GrafanaBootConfig implements GrafanaConfig {
   theme: GrafanaTheme;
   theme2: GrafanaTheme2;
   featureToggles: FeatureToggles = {};
+  anonymousEnabled = false;
   licenseInfo: LicenseInfo = {} as LicenseInfo;
   rendererAvailable = false;
   dashboardPreviews: {