[Aarti-panchal01]

Description

PUT /hooks/{hookId} with a new displayName or isActive returns 200 and lists them under changes, but the hook keeps its old name and active flag (checked in m_hook). HookWritePlatformServiceImpl.updateHook adds both to the changes map but never sets them on the Hook entity, unlike events and config. It also reported both as changed (and saved) when the request left them out, because it compared null with the stored value.

The hook now gets the new name and active flag when the request provides them, and they are left alone when it does not.

Added HookWritePlatformServiceImplTest: one test renames and deactivates a hook, one sends neither field. Both fail on develop and pass with this change.

Found while building the Manage Hooks pages of the Mifos X React web app (MXWAR-235).

JIRA: https://issues.apache.org/jira/browse/FINERACT-2974

Checklist

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