Resolve request instead of panicking on asset protocol

Editor assessment

The subject states remedy and condition precisely: the asset protocol now resolves the request instead of panicking. The error mode (a panic), the affected protocol, and the corrected behavior are all present with a meaningful core scope, so a reader understands both the defect and its severity without a diff. The fix type is right, no body is required since the behavioral change is stated, and no footers appear. Hygiene is clean. A compact message about replacing a crash with a handled failure, which is exactly what such a fix should record.