fix(utils): add missing getErrorMessage imports at 4 call sites

The sweep agents added getErrorMessage calls without the corresponding
import in 4 files, causing test failures. Added the missing imports.

Author: waleedlatif1

apps/sim/executor/handlers/workflow/workflow-handler.ts

@@ -1,4 +1,5 @@
 import { createLogger } from '@sim/logger'
+import { getErrorMessage } from '@sim/utils/errors'
 import { generateId } from '@sim/utils/id'
 import { buildNextCallChain, validateCallChain } from '@/lib/execution/call-chain'
 import { snapshotService } from '@/lib/logs/execution/snapshot/service'

apps/sim/hooks/use-execution-stream.ts

@@ -1,5 +1,6 @@
 import { useCallback } from 'react'
 import { createLogger } from '@sim/logger'
+import { getErrorMessage } from '@sim/utils/errors'
 import type {
   BlockChildWorkflowStartedData,
   BlockCompletedData,

apps/sim/lib/copilot/request/go/stream.ts

@@ -1,5 +1,6 @@
 import { type Context, SpanStatusCode } from '@opentelemetry/api'
 import { createLogger } from '@sim/logger'
+import { getErrorMessage } from '@sim/utils/errors'
 import { ORCHESTRATION_TIMEOUT_MS } from '@/lib/copilot/constants'
 import {
   type MothershipStreamV1EventType,

apps/sim/tools/index.ts

@@ -1,5 +1,5 @@
 import { createLogger } from '@sim/logger'
-import { toError } from '@sim/utils/errors'
+import { getErrorMessage, toError } from '@sim/utils/errors'
 import { sleep } from '@sim/utils/helpers'
 import { randomFloat } from '@sim/utils/random'
 import { getBYOKKey } from '@/lib/api-key/byok'