[CI] Percy builds can fail at test closedown

[unlikelyzero]

Summary

Currently tracking this issue based on this failing build: https://app.circleci.com/pipelines/github/nasa/openmct/23591/workflows/88c419fb-2dcf-4f80-a3cf-4a6217042330/jobs/103331

[percy:core:browser] Closing browser (783ms)
[percy:core:browser] Browser closed (23ms)
[percy:client] Finalizing build 36306715... (0ms)
[percy:cli] Error: Finalizing build 36306715 failed: cannot finalize before all snapshot resources are uploaded. This is likely a client error, please make sure that content for all SHAs in 'missing-resources' from the snapshot response are uploaded before calling finalize.
    at handleFinished (file:///root/project/e2e/node_modules/@percy/client/dist/utils.js:186:17)
    at IncomingMessage.<anonymous> (file:///root/project/e2e/node_modules/@percy/client/dist/utils.js:202:27)
    at IncomingMessage.emit (node:events:531:35)
    at endReadableNT (node:internal/streams/readable:1696:12)
    at process.processTicksAndRejections (node:internal/process/task_queues:82:21) (182ms)