fix: allow desktop release version history

server/migrations_ops/20260610120000_desktop_client_release_version_history.down.sql

@@ -0,0 +1,4 @@
+DROP INDEX IF EXISTS ops.uk_desktop_client_releases_target_version;
+
+CREATE UNIQUE INDEX IF NOT EXISTS uk_desktop_client_releases_target
+    ON ops.desktop_client_releases(platform, arch, channel);

server/migrations_ops/20260610120000_desktop_client_release_version_history.up.sql

@@ -0,0 +1,4 @@
+DROP INDEX IF EXISTS ops.uk_desktop_client_releases_target;
+
+CREATE UNIQUE INDEX IF NOT EXISTS uk_desktop_client_releases_target_version
+    ON ops.desktop_client_releases(platform, arch, channel, version);