docs(workflows): describe what still runs when a stop-after target is ruled out (#8663)

When routing rules out the stopAfterBlockId target, the engine stops scheduling at that decision but lets blocks that already started finish. The contract said the other branches never run. Reword it, and regenerate the OpenAPI spec. Behaviour is unchanged.

Author: waleedlatif1

apps/docs/openapi-v2-workflows.json

@@ -12617,7 +12617,7 @@
                     ]
                   },
                   "stopAfterBlockId": {
-                    "description": "Saved workflow block after which the run stops; downstream blocks do not execute. Must not be inside a loop or parallel. If a router, condition, or untaken error path routes the run away from the block, the run fails as soon as that is decided, without running the other branches. With a block entry naming the same block, re-runs only that block against the source run.",
+                    "description": "Saved workflow block after which the run stops; downstream blocks do not execute. Must not be inside a loop or parallel. If a router, condition, or untaken error path routes the run away from the block, the run fails as soon as that is decided; no further block starts, though blocks already running finish. With a block entry naming the same block, re-runs only that block against the source run.",
                     "type": "string",
                     "minLength": 1
                   }

apps/sim/lib/api/contracts/v2/workflows.ts

@@ -1302,7 +1302,7 @@ export const v2WorkflowRunSelectionSchema = z.discriminatedUnion('source', [
         .min(1, 'run.stopAfterBlockId cannot be empty')
         .optional()
         .describe(
-          'Saved workflow block after which the run stops; downstream blocks do not execute. Must not be inside a loop or parallel. If a router, condition, or untaken error path routes the run away from the block, the run fails as soon as that is decided, without running the other branches. With a block entry naming the same block, re-runs only that block against the source run.'
+          'Saved workflow block after which the run stops; downstream blocks do not execute. Must not be inside a loop or parallel. If a router, condition, or untaken error path routes the run away from the block, the run fails as soon as that is decided; no further block starts, though blocks already running finish. With a block entry naming the same block, re-runs only that block against the source run.'
         ),
     })
     .strict(),