refactor(run-engine): cite the batchId log sites by symbol, not line number

The RunBlockEdge comment pointed at stale waitpointSystem.ts line
numbers that no longer match the file after this branch shrank it.
Name the continueRunIfUnblocked method instead so the citation can't
drift again.

Author: d-cs

internal-packages/run-engine/src/engine/waitpointCoordinator/types.ts

@@ -45,8 +45,8 @@ export type ClearRunBlockStateParams = {
 /**
  * One block edge, with the fields the unblock decision reads.
  *
- * `batchId` is read by no logic. It rides inside two `logger.debug` payloads
- * (`waitpointSystem.ts:702-705` and `:936-939`), so removing it changes log output.
+ * `batchId` is read by no logic. It rides inside the two `logger.debug` payloads in
+ * `continueRunIfUnblocked`, so removing it changes log output.
  */
 export type RunBlockEdge = {
   id: string;