Temporary external map image cache

Workflow runs for Temporary external map image cache

• Make external map image cache validator idempotent

  completed successfully:
  Temporary external map image cache#5:Commitcad56d9pushedbyShazbot
  perf/map-render-caches

  Sep 16, 20261m 11s
  More actions for workflow run 5

• Ensure cold map IPC returns external image URLs

  failed:
  Temporary external map image cache#4:Commit4d5e256pushedbyShazbot
  perf/map-render-caches

  Sep 16, 202622s
  More actions for workflow run 4

• Fix temporary map image cache type generation

  completed successfully:
  Temporary external map image cache#3:Commit67d136bpushedbyShazbot
  perf/map-render-caches

  Sep 16, 202659s
  More actions for workflow run 3

• Rerun external map image cache validation

  failed:
  Temporary external map image cache#2:Commitf1ca7d2pushedbyShazbot
  perf/map-render-caches

  Sep 16, 202650s
  More actions for workflow run 2

• Run temporary external map image cache codemod

  failed:
  Temporary external map image cache#1:Commit6aa8fecpushedbyShazbot
  perf/map-render-caches

  Sep 16, 202618s
  More actions for workflow run 1