1-3093: round the project health (#8718)

This PR rounds the average health score we show for a project. With
fractional numbers, it'd often overflow the graph. It also doesn't
really give you much extra info, so we can round it. The rounding is
then used both in the text, in the graph, and to calculate the graph
fill percentage.

Before:

![image](https://github.com/user-attachments/assets/8d0fea3d-411d-42fb-bd80-d2683a63cdf2)

After:

![image](https://github.com/user-attachments/assets/f5c51742-8a2c-4b1a-bca3-7e812b9a1072)

src/lib/features/project-status/project-status-service.ts

@@ -72,7 +72,7 @@ export class ProjectStatusService {
                 segments,
             },
             activityCountByDate,
-            averageHealth,
+            averageHealth: Math.round(averageHealth),
             lifecycleSummary,
         };
     }

src/lib/features/project-status/projects-status.e2e.test.ts

@@ -69,6 +69,7 @@ afterAll(async () => {
 
 beforeEach(async () => {
     await db.stores.clientMetricsStoreV2.deleteAll();
+    await db.rawDatabase('flag_trends').delete();
 });
 
 test('project insights should return correct count for each day', async () => {
@@ -257,6 +258,19 @@ test('project health should be correct average', async () => {
     expect(body.averageHealth).toBe(40);
 });
 
+test('project health stats should round to nearest integer', async () => {
+    await insertHealthScore('2024-04', 6);
+
+    await insertHealthScore('2024-05', 5);
+
+    const { body } = await app.request
+        .get('/api/admin/projects/default/status')
+        .expect('Content-Type', /json/)
+        .expect(200);
+
+    expect(body.averageHealth).toBe(6);
+});
+
 test('project status contains lifecycle data', async () => {
     const { body } = await app.request
         .get('/api/admin/projects/default/status')