feat(core-shared): wire PII scrub processors FIRST in OTel pipeline

packages/core-shared/src/instrumentation/sentry/scrub.ts

@@ -9,7 +9,7 @@ import {
   REDACTED_VALUE,
   keyContainsPii,
   queryParamContainsPii,
-} from "./pii-fields";
+} from "../otel/pii-fields";
 
 // Minimal structural types matching Sentry's event shape used in scrubbers.
 // Using index signatures broad enough to satisfy both ErrorEvent and TransactionEvent.