Adapt app-driven entity page

Addresses the changes required after merging #2076. The Sentry plugin
now defines a router and the widget will be displayed as a tab.

packages/app/src/components/catalog/EntityPage.tsx

@@ -14,6 +14,7 @@
  * limitations under the License.
  */
 import { Router as GitHubActionsRouter } from '@backstage/plugin-github-actions';
+import { Router as SentryRouter } from '@backstage/plugin-sentry';
 import React from 'react';
 import {
   EntityPageLayout,
@@ -43,6 +44,11 @@ const ServiceEntityPage = ({ entity }: { entity: Entity }) => (
       title="CI/CD"
       element={<GitHubActionsRouter entity={entity} />}
     />
+    <EntityPageLayout.Content
+      path="/sentry"
+      title="Sentry"
+      element={<SentryRouter entity={entity} />}
+    />
   </EntityPageLayout>
 );
 
@@ -58,6 +64,11 @@ const WebsiteEntityPage = ({ entity }: { entity: Entity }) => (
       title="CI/CD"
       element={<GitHubActionsRouter entity={entity} />}
     />
+    <EntityPageLayout.Content
+      path="/sentry"
+      title="Sentry"
+      element={<SentryRouter entity={entity} />}
+    />
   </EntityPageLayout>
 );