feat(tls): add ocspStapling to certificate config

Expose the OCSP Stapling refresh interval (seconds) on the TLS
certificate object in the inbound security form, defaulting to 3600s
to match xray-core. Covers both file-backed and inline cert shapes.

frontend/src/pages/inbounds/form/useSecurityActions.ts

@@ -167,6 +167,7 @@ export function useSecurityActions({ form, setSaving, messageApi, nodeId }: UseS
         keyFile: '',
         certificate: [],
         key: [],
+        ocspStapling: 3600,
         oneTimeLoading: false,
         usage: 'encipherment',
         buildChain: false,