fix: resolve with non-lowercased acct is broken (#15813)

* fix: resolve with non-lowercased acct is broken

* docs(changelog): Fix: 大文字を含むユーザの URL で紹介された場合に 404 エラーを返す問題

packages/backend/test/unit/AnnouncementService.ts

@@ -44,7 +44,7 @@ describe('AnnouncementService', () => {
 		return usersRepository.insert({
 			id: genAidx(Date.now()),
 			username: un,
-			usernameLower: un,
+			usernameLower: un.toLowerCase(),
 			...data,
 		})
 			.then(x => usersRepository.findOneByOrFail(x.identifiers[0]));

packages/backend/test/unit/SigninWithPasskeyApiService.ts

@@ -89,8 +89,8 @@ describe('SigninWithPasskeyApiService', () => {
 		app = await Test.createTestingModule({
 			imports: [GlobalModule, CoreModule],
 			providers: [
-				SigninWithPasskeyApiService, 
-				{ provide: RateLimiterService, useClass: FakeLimiter }, 
+				SigninWithPasskeyApiService,
+				{ provide: RateLimiterService, useClass: FakeLimiter },
 				{ provide: SigninService, useClass: FakeSigninService },
 			],
 		}).useMocker((token) => {
@@ -115,7 +115,7 @@ describe('SigninWithPasskeyApiService', () => {
 		jest.spyOn(webAuthnService, 'verifySignInWithPasskeyAuthentication').mockImplementation(FakeWebauthnVerify);
 
 		const dummyUser = {
-			id: uid, username: uid, usernameLower: uid.toLocaleLowerCase(), uri: null, host: null,
+			id: uid, username: uid, usernameLower: uid.toLowerCase(), uri: null, host: null,
 		 };
 		const dummyProfile = {
 			userId: uid,

packages/backend/test/unit/entities/UserEntityService.ts

@@ -74,7 +74,7 @@ describe('UserEntityService', () => {
 					...userData,
 					id: genAidx(Date.now()),
 					username: un,
-					usernameLower: un,
+					usernameLower: un.toLowerCase(),
 				})
 				.then(x => usersRepository.findOneByOrFail(x.identifiers[0]));