fix(react-router): Pass the project when creating a release (#25089)

The release API rejects a release without a project, and the project
given to the `sentry` SDK does not reach `release.create`. Since the
move to that SDK (#23398), the Vite plugin logged `[Sentry] Could not
create release` on every build; the upload itself still ran, so builds
succeeded without a release. The unit test mocked the SDK, so it did not
catch it.

The plugin now passes the project it already has, as
`@sentry/bundler-plugins` does. Same bug in the Remix upload scripts,
fixed in #25079.

Refs #24989

Co-authored-by: Claude Fable 5.1 <noreply@anthropic.com>

Author: chargome

packages/react-router/src/vite/buildEnd/handleOnBuildEnd.ts

@@ -67,7 +67,8 @@ export const sentryOnBuildEnd: BuildEndHook = async ({ reactRouterConfig, viteCo
   // check if release should be created
   if (release?.name) {
     try {
-      await sentry.release.create({ orgVersion: release.name });
+      // The release API requires a project, and the one given to the SDK does not reach this call.
+      await sentry.release.create({ orgVersion: release.name, project });
     } catch (error) {
       // eslint-disable-next-line no-console
       console.error('[Sentry] Could not create release', error);

packages/react-router/test/vite/buildEnd/handleOnBuildEnd.test.ts

@@ -85,7 +85,10 @@ describe('sentryOnBuildEnd', () => {
     // @ts-expect-error - mocking the React config
     await sentryOnBuildEnd(config);
 
-    expect(mockSentrySdkInstance.release.create).toHaveBeenCalledWith({ orgVersion: 'v1.0.0' });
+    expect(mockSentrySdkInstance.release.create).toHaveBeenCalledWith({
+      orgVersion: 'v1.0.0',
+      project: 'test-project',
+    });
   });
 
   it('resolves root-level BuildTimeOptionsBase options for release creation and source map upload', async () => {
@@ -115,7 +118,7 @@ describe('sentryOnBuildEnd', () => {
       url: undefined,
       headers: undefined,
     });
-    expect(mockSentrySdkInstance.release.create).toHaveBeenCalledWith({ orgVersion: '1.2.3' });
+    expect(mockSentrySdkInstance.release.create).toHaveBeenCalledWith({ orgVersion: '1.2.3', project: 'my-project' });
     expect(mockSentrySdkInstance.sourcemap.upload).toHaveBeenCalledWith({
       directory: '/build',
       release: '1.2.3',