fix: respect session model override in agent runtime (#14783) (#14983)

Merged via /review-pr -> /prepare-pr -> /merge-pr.

Prepared head SHA: ec47d1a7bf
Co-authored-by: shtse8 <8020099+shtse8@users.noreply.github.com>
Co-authored-by: gumadeiras <5599352+gumadeiras@users.noreply.github.com>
Reviewed-by: @gumadeiras

src/cron/isolated-agent/session.ts

@@ -23,6 +23,8 @@ export function resolveCronSession(params: {
     thinkingLevel: entry?.thinkingLevel,
     verboseLevel: entry?.verboseLevel,
     model: entry?.model,
+    modelOverride: entry?.modelOverride,
+    providerOverride: entry?.providerOverride,
     contextTokens: entry?.contextTokens,
     sendPolicy: entry?.sendPolicy,
     lastChannel: entry?.lastChannel,