[Bug]: Boolean dryRun flag in `/history/merge` API endpoint resorts to using `isDryRun` instead.

[anjshrg]

What happened

curl --location 'http://localhost:19120/api/v2/trees/main@<hash>/history/merge' \
--header 'Content-Type: application/json' \
--header 'Accept: application/json' \
--data '{
  "fromRefName": "<branch-name>",
  "message": "this is dry run",
  "fromHash": "<hash>",
  "dryRun": true,
  "fetchAdditionalInfo": true,
  "returnConflictAsResult": true
}'

Above payload is constructed based on the nessie-spec.yml
Currently it ignores the boolean flags because backend resorts to using isDryRun, isFetchAdditonalInfo, isReturnConflictAsResult instead

How to reproduce it

1. Use above payload
2. pass dryRun flag as true
3. It will ignore the flag and execute merge op

Nessie server type (docker/uber-jar/built from source) and version

helm deployed on k8s

Client type (Ex: UI/Spark/pynessie ...) and version

API on 0.103.3 - but the error persists in latest version too

Additional information

No response