added event seperate to additionalDocumenets

[fudge88]

Jira link

See PROJ-XXXXXX

Change description

Testing done

Security Vulnerability Assessment

CVE Suppression: Are there any CVEs present in the codebase (either newly introduced or pre-existing) that are being intentionally suppressed or ignored by this commit?

• Yes
• No

Checklist

• commit messages are meaningful and follow good commit message guidelines
• README and other documentation has been updated / added (if needed)
• tests have been updated / new tests has been added (if needed)
• Does this PR introduce a breaking change

[github-actions]

CCD diff summary

👉 Full report: https://github.com/hmcts/pcs-api/actions/runs/26231744276?check_suite_focus=true

CaseField.json

RegularExpression	Max	Searchable	Min	FieldTypeParameter	HintText	Label	ID	FieldType
+	+	+	+	+UploadedDocument	+	+	+uploadedAdditionalDocuments	+Collection

AuthorisationCaseEvent/AuthorisationCaseEvent.json

UserRole	CaseEventID	CRUD
+[DEFENDANT]	+uploadDocuments	+CR

CaseEvent/uploadDocuments.json

Description	EndButtonLabel	EventEnablingCondition	ID	Name	PostConditionState	PreConditionState(s)	Publish	ShowEventNotes	ShowSummary
+Upload additional documents	+Save and continue	+[STATE]="NEVER_SHOW"	+uploadDocuments	+Upload additional documents	+CASE_ISSUED	+CASE_ISSUED	+N	+N	+N