fix(zk chains): Increase Batch Seal Default Deadline (#3154)

## What ❔

This PR increases the L1 Batch seadl default deadline from 1 hour to 8
hours.

## Why ❔

- For lower TPS chains, this configuration matches reality better and is
less wasteful in terms of Ethereum interactions.
- For higher TPS chains, the batches will be sealed by other seal
criteria anyways

## Checklist

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<!-- For draft PRs check the boxes as you complete them. -->

- [x] PR title corresponds to the body of PR (we generate changelog
entries from PRs).
- [ ] Tests for the changes have been added / updated.
- [x] Documentation comments have been added / updated.
- [x] Code has been formatted via `zkstack dev fmt` and `zkstack dev
lint`.

etc/env/file_based/overrides/mainnet.yaml

@@ -1,5 +1,6 @@
 state_keeper:
-  block_commit_deadline_ms: 3600000
+  # Default batch seal time deadline: 8 hours
+  block_commit_deadline_ms: 28000000
   minimal_l2_gas_price: 45250000
 eth:
   sender:

etc/env/file_based/overrides/testnet.yaml

@@ -1,5 +1,6 @@
 state_keeper:
-  block_commit_deadline_ms: 3600000
+  # Default batch seal time deadline: 8 hours
+  block_commit_deadline_ms: 28000000
   minimal_l2_gas_price: 25000000
 eth:
   sender: