sql script/flyway to fix file access requests

Author: stevenwinship

doc/release-notes/10714-access-requests-missing-since-upgrade-v6-0.md

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+### Flyway Script added to Fix File Access Requests when upgrading from Dataverse 6.0
+
+Database update script added to prevent duplicate keys when upgrading from V6.0
+This script will delete access requests made after the initial request and will set the initial request to "Created"
+
+See: https://github.com/IQSS/dataverse/issues/10714

src/main/resources/db/migration/V6.4.0.4.sql

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+-- Fixes File Access Requests when upgrading from Dataverse 6.0
+-- See: https://github.com/IQSS/dataverse/issues/10714
+DELETE FROM fileaccessrequests
+WHERE creation_time <> (SELECT MIN(creation_time)
+                        FROM fileaccessrequests far2
+                        WHERE far2.datafile_id  = fileaccessrequests.datafile_id
+                          AND far2.authenticated_user_id  = fileaccessrequests.authenticated_user_id
+                          AND far2.request_state is NULL);
+
+UPDATE fileaccessrequests SET request_state='CREATED' WHERE request_state is NULL;