3a4a788ee0db83d20607f14801dbed2ee932943c init: Correct coins db cache size setting (TheCharlatan)
Pull request description:
The chainstate caches are currently re-balanced on startup even in the non-assumeutxo case, leading to the database being needlessly re-opened and its cache re-allocated.
Similar to `InitCoinsCache` and `m_coinstip_cache_size_bytes`, the `m_coinsdb_cache_size_bytes` should be set in `InitCoinsDB`.
Together with only conservatively setting the cache values when a assumeutxo chainstate is present, this allows for skipping the cache re-balance during initialization in the normal non-assumeutxo case.
Before:
```
2024-10-09T21:22:17Z Checking all blk files are present...
2024-10-09T21:22:17Z Initializing chainstate Chainstate [ibd] @ height -1 (null)
2024-10-09T21:22:17Z Opening LevelDB in /home/drgrid/.bitcoin/signet/chainstate
2024-10-09T21:22:17Z Opened LevelDB successfully
2024-10-09T21:22:17Z Using obfuscation key for /home/drgrid/.bitcoin/signet/chainstate: b0a6f4e95fd05c92
2024-10-09T21:22:17Z Loaded best chain: hashBestChain=0000000e119967d4937dad58456885ae43fb1761db686947e2f8e168c9a39a4f height=216852 date=2024-10-09T21:06:16Z progress=0.999989
2024-10-09T21:22:17Z Opening LevelDB in /home/drgrid/.bitcoin/signet/chainstate
2024-10-09T21:22:17Z Opened LevelDB successfully
2024-10-09T21:22:17Z Using obfuscation key for /home/drgrid/.bitcoin/signet/chainstate: b0a6f4e95fd05c92
2024-10-09T21:22:17Z [Chainstate [ibd] @ height 216852 (0000000e119967d4937dad58456885ae43fb1761db686947e2f8e168c9a39a4f)] resized coinsdb cache to 8.0 MiB
2024-10-09T21:22:17Z [Chainstate [ibd] @ height 216852 (0000000e119967d4937dad58456885ae43fb1761db686947e2f8e168c9a39a4f)] resized coinstip cache to 440.0 MiB
2024-10-09T21:22:17Z init message: Verifying blocks…
```
After:
```
2024-10-09T21:21:37Z Checking all blk files are present...
2024-10-09T21:21:37Z Initializing chainstate Chainstate [ibd] @ height -1 (null)
2024-10-09T21:21:37Z Opening LevelDB in /home/drgrid/.bitcoin/signet/chainstate
2024-10-09T21:21:37Z Opened LevelDB successfully
2024-10-09T21:21:37Z Using obfuscation key for /home/drgrid/.bitcoin/signet/chainstate: b0a6f4e95fd05c92
2024-10-09T21:21:37Z Loaded best chain: hashBestChain=0000012c12b48011a7d9150ce96ed6a44bbf32b09eeecaff4a667789dda2a566 height=216850 date=2024-10-09T20:37:05Z progress=0.999971
2024-10-09T21:21:37Z init message: Verifying blocks…
```
The change may also be verified by looking at the `feature_assumeutxo.py` functional test debug logs.
ACKs for top commit:
fjahr:
utACK 3a4a788ee0db83d20607f14801dbed2ee932943c
achow101:
ACK 3a4a788ee0db83d20607f14801dbed2ee932943c
laanwj:
Code review ACK 3a4a788ee0db83d20607f14801dbed2ee932943c
BrandonOdiwuor:
Code Review ACK 3a4a788ee0db83d20607f14801dbed2ee932943c
Tree-SHA512: 87878d0d196bb426370d4b4bd180ca52a34017a0799ecea651c2532461fd2927b0f7cc8182276a7d9bb1fe0ede7d0ad677e3714ca22f321917d711c643acc578
6b73eb9a1a