Restore defaultDbStatementSerializer export and move its test to server-utils

The export was dropped when index.ts was split into exports.ts, which broke the
redis-common test. It is published public API, so removing it is breaking.
The test was relocated into packages/core with a cross-package relative import;
it belongs next to the code it tests.

Author: andreiborza

packages/server-utils/src/index.ts

@@ -16,6 +16,7 @@ export { instrumentPrisma, prismaIntegration } from './prisma';
 export type { PrismaInstrumentationConfig, PrismaOptions } from './prisma';
 export { redisIntegration, type RedisDiagnosticChannelsOptions } from './redis';
 export type { RedisDiagnosticChannelResponseHook } from './redis/redis-dc-subscriber';
+export { defaultDbStatementSerializer } from './redis/redis-statement-serializer';
 export { bindTracingChannelToSpan } from './tracing-channel';
 export type {
   SentryTracingChannel,

…/integrations/redis/redis-common.test.ts …er-utils/test/redis/redis-common.test.tspackages/core/test/integrations/redis/redis-common.test.ts renamed to packages/server-utils/test/redis/redis-common.test.ts packages/core/test/integrations/redis/redis-common.test.ts renamed to packages/server-utils/test/redis/redis-common.test.ts

@@ -4,8 +4,8 @@
  * Licensed under the Apache License, Version 2.0
  */
 
-import { defaultDbStatementSerializer } from '../../../../server-utils/src/redis/redis-statement-serializer';
 import { describe, expect, it } from 'vitest';
+import { defaultDbStatementSerializer } from '../../src/redis/redis-statement-serializer';
 
 describe('defaultDbStatementSerializer()', () => {
   const testCases: Array<{