New Tracing metrics hotfixes; nix LMDB config

[mgmeier]

Description

This PR fixes the following faulty metrics for the New Tracing system, addressing the "Known Issues" for the 10.3.1 release:

• connectionManager_*
• slotsMissed

Additionally, it adjusts workbench and nix service configs to recent changes in UTxO-HD:

• LMDB backing store is not configured on the CLI anymore, but via node config.
• Trace messages removed from UTxO-HD have been removed from workbench

Checklist

• Commit sequence broadly makes sense and commits have useful messages
• New tests are added if needed and existing tests are updated. These may include:
  • golden tests
  • property tests
  • roundtrip tests
  • integration tests
    See Runnings tests for more details
• Any changes are noted in the CHANGELOG.md for affected package
• The version bounds in .cabal files are updated
• CI passes. See note on CI. The following CI checks are required:
  • Code is linted with hlint. See .github/workflows/check-hlint.yml to get the hlint version
  • Code is formatted with stylish-haskell. See .github/workflows/stylish-haskell.yml to get the stylish-haskell version
  • Code builds on Linux, MacOS and Windows for ghc-8.10.7 and ghc-9.2.7
• Self-reviewed the diff

[fmaste]

No issues here, merge it!

[NadiaYvette]

I poked at it & only found background mostly cosmetic things to go on about. That's a seal of approval!

[NadiaYvette]

Big green light!