Fix PR review findings

- Replace copy-pasted New Relic URLs in Resend third-party entry
  with correct resend.com URLs and drop inapplicable fields
- Escape single '%' instead of '%%' in LIKE pattern conversion so
  literal percent signs are not treated as wildcards
- Return actual row ID from CommonTrackerPattern.Upsert via
  RETURNING id so conflict-path callers get the existing ID
- Add ORDER BY id ASC to vendor-by-common-third-party query for
  deterministic LIMIT 1 selection

Signed-off-by: Émile Ré <emile@getprobo.com>
Signed-off-by: Émile Ré <emile@probo.com>

cmd/common-tracker-patterns-import/main.go

@@ -176,7 +176,7 @@ func run() error {
 					UpdatedAt:          now,
 				}
 
-				wasInserted, err := pattern.Upsert(ctx, tx)
+				_, wasInserted, err := pattern.Upsert(ctx, tx)
 				if err != nil {
 					return fmt.Errorf("cannot upsert common tracker pattern %q: %w", p.Pattern, err)
 				}