Replace hardcoded placeholder consent sourceReference with actual consent document reference

[coderabbitai]

Description

A hardcoded placeholder consent sourceReference needs to be replaced with an actual consent document reference when consent API support is implemented.

Location

File: bulk-export-client/pdex_utils.bal
Lines: ~123-125

Current Implementation

The code currently uses a placeholder:

sourceReference: {
    reference: "http://example.org/DocumentReference/someconsent"
}

Resolution

This will be fixed with consent API support in a future update.

References

• Related PR: Refactor export data syncing and utility services used by admin portal #162
• Review comment: Refactor export data syncing and utility services used by admin portal #162 (comment)
• Requested by: @sameeragunarathne