Make VERIFY in ApplyGroupInfo() more verbose

```
Sep 30 09:52:55 vla14-7ct0-11b kikimr[3741974]: VERIFY failed (2025-09-30T09:52:55.332688Z):
Sep 30 09:52:55 vla14-7ct0-11b kikimr[3741974]:   contrib/ydb/core/blobstorage/dsproxy/dsproxy_state.cpp:105
Sep 30 09:52:55 vla14-7ct0-11b kikimr[3741974]:   ApplyGroupInfo(): requirement !LifeCyclePhase || *LifeCyclePhase == Info->GetLifeCyclePhase() failed
```

AI CLOUDINC-5036