fix: replace panic with retry loop in yellowstone slot tracker

[civa]

Problem:
Current behavior is a panic on grpc error. anything can cause a grpc error and it shouldnt halt the code forever. its an issue we face in prod already

2026-04-06T02:22:08.289462Z  INFO yellowstone_jet_tpu_client::core: Spawning connection for remote peer: EvnRmnMrd69kFdbLMxWkTn1icZ7DCceRhvmb2SJXqDo4, attempt: 1, source: Prediction
2026-04-06T02:22:16.399815Z ERROR yellowstone_jet_tpu_client::yellowstone_grpc::slot_tracker: Yellowstone slot tracker stream error: Status { code: Cancelled, message: "stream terminated by user", source: None }
thread 'tokio-rt-worker' (657774) panicked at /Users/civa/.cargo/registry/src/index.crates.io-1949cf8c6b5b557f/yellowstone-jet-tpu-client-0.3.1/src/yellowstone_grpc/slot_tracker.rs:70:17:
Box<dyn Any>
note: run with `RUST_BACKTRACE=1` environment variable to display a backtrace
2026-04-06T02:22:16.400170Z ERROR yellowstone_jet_tpu_client::yellowstone_grpc::sender: Yellowstone TPU sender dependency task 'slot-tracker' has failed with Err(JoinError::Panic(Id(35), ...))
thread 'tokio-rt-worker' (657774) panicked at /Users/civa/.cargo/registry/src/index.crates.io-1949cf8c6b5b557f/yellowstone-jet-tpu-client-0.3.1/src/yellowstone_grpc/schedule.rs:40:45:
load: PoisonError(411318601)

With this PR - it will reconnect with a capped(15s) exponential backoff

2026-04-06T02:24:12.139024Z  INFO yellowstone_jet_tpu_client::core: Spawning connection for remote peer: 9rkJMARqK6VBkcxGfKBAwnA44gPAfGxPbPsfsggFNDSQ, attempt: 1, source: Prediction
2026-04-06T02:24:12.251716Z ERROR yellowstone_jet_tpu_client::yellowstone_grpc::slot_tracker: Yellowstone slot tracker stream error: Status { code: Cancelled, message: "stream terminated by user", source: None }
2026-04-06T02:24:12.251743Z  WARN yellowstone_jet_tpu_client::yellowstone_grpc::slot_tracker: Yellowstone slot tracker reconnecting in 1s...
2026-04-06T02:24:13.676870Z  INFO yellowstone_jet_tpu_client::yellowstone_grpc::slot_tracker: Yellowstone slot tracker reconnected
2026-04-06T02:24:13.740345Z  WARN yellowstone_jet_tpu_client::core: Connection attempt 1 to remote peer: [HEL1USMZKAL2odpNBj2oCjffnFGaYwmbGmyewGv1e2TU] failed, retrying...
2026-04-06T02:24:13.740397Z  INFO yellowstone_jet_tpu_client::core: Spawning connection for remote peer: HEL1USMZKAL2odpNBj2oCjffnFGaYwmbGmyewGv1e2TU, attempt: 2, source: Reattempt
2026-04-06T02:24:14.539056Z  INFO yellowstone_jet_tpu_client::core: Spawning connection for remote peer: 7EzbSahSfSjeRexHcNDLDpzHBAGBLjLKtjbmuoQnEtjE, attempt: 1, source: Prediction