feat: log tersed tipset key for troubleshooting

[hanabi1224]

Summary of changes

Changes introduced in this pull request:

• log tersed tipset key for troubleshooting

2025-05-28T14:07:38.075696Z  INFO forest::chain_sync::chain_follower: Catching up to HEAD: 5004478(eal...v2i, ebx...4mu, ebg...yy2, edp...ul6, ebp...236, ed2...uro) -> 5004495
...
2025-05-28T14:07:48.243932Z  INFO forest::state_manager: Evaluating tipset: EPOCH=5004489, blocks=1, tsk=(ead...lhi)
2025-05-28T14:07:48.777253Z  INFO forest::state_manager: Evaluating tipset: EPOCH=5004491, blocks=1, tsk=(ecf...6va)
2025-05-28T14:07:49.454757Z  INFO forest::state_manager: Evaluating tipset: EPOCH=5004492, blocks=1, tsk=(ecl...2hu)
2025-05-28T14:07:49.974191Z  INFO forest::state_manager: Evaluating tipset: EPOCH=5004493, blocks=6, tsk=(ed7...vhm, ecn...q5k, edo...rzq, eaf...4de, edd...y3g, ebq...ane)

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Change checklist

• I have performed a self-review of my own code,
• I have made corresponding changes to the documentation. All new code adheres to the team's documentation standards,
• I have added tests that prove my fix is effective or that my feature works (if possible),
• I have made sure the CHANGELOG is up-to-date. All user-facing changes should be reflected in this document.

[LesnyRumcajs]

I'm not sold on this terse format, it makes any debugging annoying; normally you could paste the key into a blockchain explorer and get a result. Nothing useful to be done with the last few characters except for comparing against existing Forest logs.

That said, if you think it's useful then LGTM.

[elmattic]

I'm not sold on this terse format, it makes any debugging annoying; normally you could paste the key into a blockchain explorer and get a result. Nothing useful to be done with the last few characters except for comparing against existing Forest logs.

That said, if you think it's useful then LGTM.

I’d prefer to keep the full Cid as well, as it’s vital for debugging.

[hanabi1224]

@LesnyRumcajs @elmattic changed to printing full tipset key as suggested