ref(releases): fix issue count on release index & other spots (#99555)

closes
https://linear.app/getsentry/issue/REPLAY-706/release-newgroups-count-is-sometimes-incorrect
closes
https://linear.app/getsentry/issue/REPLAY-151/release-overview-new-issues-counter-doesnt-filter-when-selecting
closes
https://linear.app/getsentry/issue/REPLAY-139/new-issues-in-release-showing-up-unexpectedly-in-the-team-plan

i believe all the issues above were relating to an incorrect issue count
value in the release row, leading to confusion about the actual count of
new issues for that release.

the `newGroups` value returned by the `/releases/` endpoint is correct;
however, the frontend on the releases index was mistakenly using the
project's `newGroups` field.  The project's `newGroups` field is the sum
of all the new issues for that project -- hence why they're all the same
in the photo below. we should instead be using the count from the
release itself.

i also fixed 2 other spots where we were relying on the project
`newGroups` field in insights mobile session health page & on release
drawer.

before:
<img width="1084" height="376" alt="SCR-20250915-nxra"
src="https://github.com/user-attachments/assets/2f2044b7-4cb2-49e1-b2fb-437589bf0212"
/>

<img width="1272" height="514" alt="SCR-20250915-oech"
src="https://github.com/user-attachments/assets/d6b7d321-c91b-4221-a673-bdc2656c40a5"
/>


after:
<img width="1080" height="346" alt="SCR-20250915-nxnn"
src="https://github.com/user-attachments/assets/a72f03fd-e478-4e22-a6c8-217958674cfc"
/>

<img width="1267" height="564" alt="SCR-20250915-ocyn"
src="https://github.com/user-attachments/assets/65364c90-f9de-459a-af16-82ab1313fdd8"
/>

Author: michellewzhang

static/app/views/insights/sessions/queries/useOrganizationReleases.tsx

@@ -97,7 +97,7 @@ export default function useOrganizationReleases({
               : '',
             crash_free_sessions: release.projects[0]?.healthData?.crashFreeSessions ?? 0,
             sessions: release.projects[0]?.healthData?.totalSessions ?? 0,
-            error_count: release.projects[0]?.newGroups ?? 0,
+            error_count: release.newGroups ?? 0,
             project_id: release.projects[0]?.id ?? 0,
             adoption: release.projects[0]?.healthData?.adoption ?? 0,
             status: release.status,

static/app/views/releases/drawer/releasesDrawerTable.tsx

@@ -94,7 +94,7 @@ export function ReleasesDrawerTable({
     project: d.projects[0]!,
     release: d.version,
     date: d.dateCreated,
-    error_count: d.projects[0]?.newGroups ?? 0,
+    error_count: d.newGroups ?? 0,
     project_id: d.projects[0]?.id ?? 0,
   }));
 

static/app/views/releases/list/releaseCard/index.tsx

@@ -88,6 +88,7 @@ function ReleaseCard({
     dateCreated,
     versionInfo,
     adoptionStages,
+    newGroups,
     projects,
   } = release;
 
@@ -267,6 +268,7 @@ function ReleaseCard({
                   location={location}
                   organization={organization}
                   project={project}
+                  newGroups={newGroups}
                   releaseVersion={version}
                   showPlaceholders={showHealthPlaceholders}
                   showReleaseAdoptionStages={showReleaseAdoptionStages}

static/app/views/releases/list/releaseCard/releaseCardProjectRow.tsx

@@ -65,6 +65,7 @@ type Props = {
   index: number;
   isTopRelease: boolean;
   location: Location;
+  newGroups: number;
   organization: Organization;
   project: ReleaseProject;
   releaseVersion: string;
@@ -85,9 +86,10 @@ function ReleaseCardProjectRow({
   releaseVersion,
   showPlaceholders,
   showReleaseAdoptionStages,
+  newGroups,
 }: Props) {
   const theme = useTheme();
-  const {id, newGroups} = project;
+  const {id} = project;
 
   const crashCount = getHealthData.getCrashCount(
     releaseVersion,