fix: use correct configured ObjectMapper for resources hydration

[jwilkinson87]

This pull request refactors the FormSubmissionVersion class to improve how JSON serialization and deserialization are handled. The main change is the replacement of a locally configured Jackson ObjectMapper with a shared mapper from JsonConfig, ensuring consistent configuration across the codebase. Additionally, some minor cleanups and simplifications were made to the class.

Refactoring of JSON serialization/deserialization:

• Replaced the local Jackson ObjectMapper with the shared mapper from JsonConfig, ensuring consistent configuration for JSON operations throughout the application. (src/main/kotlin/com/ctrlhub/core/datacapture/resource/FormSubmissionVersion.kt) [1] [2]

Code simplification and cleanup:

• Removed redundant imports related to Jackson configuration and Kotlin module setup, as these are now handled centrally. (src/main/kotlin/com/ctrlhub/core/datacapture/resource/FormSubmissionVersion.kt)
• Simplified the call to retrieve registered classes by removing the unnecessary Companion qualifier. (src/main/kotlin/com/ctrlhub/core/datacapture/resource/FormSubmissionVersion.kt)

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