[21813] feat(jira_service_desk): make Create Request the single agent-callable ticket tool (#21818)

* fix(jira_service_desk): auto-paginate request, comment, status, and transition endpoints

* fix(jira_service_desk): address coderabbit review comments

* feat(jira_service_desk): make Create Request the single agent-callable ticket tool

One static-schema tool replaces create-incident's keyword-guessed request type
and create-request's additionalProps reload. Adds three discovery actions, swaps
the async-options resolvers for plain string props, removes create-incident.

* fix(jira_service_desk): modify description

* fix(jira_service_desk): address review comments
- Remove unwanted params in propDefinitions
- Modify guard