Cardano Updates

chore: bump cardano-node to 10.6.4 and plutus deps to ^>=1.61

Add hprop_build_raw_ref_script_spend test that validates spending a
UTxO locked at a PlutusV3 script address via a reference script using
cardano-cli transaction build-raw instead of the auto-balancing
transaction build command.

 - Fix RTView build
 - Let through gratiutous query params
 - Consolidate `config` paths
 - Refactor `readTimeunit`

Add a txsSyncDurationTotal counter for tracking the total time spent
syncing the mempool.

[cardano-testnet] Revert tx-generator integration from #6442

Tighten the GHCi-based schema generator so generated message schemas line
up more closely with the current tracer implementations.

This changes the generator in a few important ways:
- add a `--prune-stale-properties` mode to drop schema properties that are
  no longer supported by current inference
- preserve surviving schemas while still allowing inferred fields to be
  added or upgraded
- emit `required` fields for inferred non-optional payload keys
- improve namespace parsing for multiline `namespaceFor` clauses and
  `namespaceFor = \case` definitions
- improve `forMachine` parsing for multiline headers, nested expressions,
  lambda-case bodies, helper-emitted object fragments, and multiple
  `".="` fields on one line
- improve constructor matching and normalize qualified constructor names so
  `forMachine` and `namespaceFor` resolve to the same event
- scope handshake fallback matching to the Diffusion tracer instead of a
  global `AnyMessageAndAgency` fallback
- improve RHS inference for rendered strings, integers, booleans, arrays,
  objects, and `toJSONList` payloads
- improve GHCi signature parsing so multiline signatures and tuple results
  are handled correctly

Regenerate the message and type schemas with the new generator. This
restores missing payload fields in a number of messages, removes stale
historical fields from others, preserves useful refs in surviving
properties, and generally improves the accuracy of generated trace
schemas.

Also add/update generated trace documentation.