search_phase_execution_exception: [parse_exception] Reason: failed to parse date field in Kibana logs

[bhavyarm]

Kibana version: 7.16.0 snapshot Dec 1st

Elasticsearch version: 7.16.0 snapshot Dec 1st

Server OS version: darwin_x86_64

Browser version: chrome latest

Browser OS version: OS X

Original install method (e.g. download page, yum, from source, etc.): from staging

Describe the bug: Found while testing the fix #119504 for this bug - #119444

Lens viz displays alright -

But there is error logs about failed to parse date field [2021-10-27T04:38:34.120Z] with format [epoch_millis] in kibana logs:

log   [11:22:18.174] [info][lens][plugins] Field existence check failed on 75041e60-52c2-11ec-bdbf-a3f2bde16eb0: search_phase_execution_exception: [parse_exception] Reason: failed to parse date field [2021-12-01T16:07:17.742Z] with format [epoch_millis]: [failed to parse date field [2021-12-01T16:07:17.742Z] with format [epoch_millis]]
  log   [11:22:18.175] [error][http] ResponseError: search_phase_execution_exception: [parse_exception] Reason: failed to parse date field [2021-12-01T16:07:17.742Z] with format [epoch_millis]: [failed to parse date field [2021-12-01T16:07:17.742Z] with format [epoch_millis]]
    at onBody (/Users/bhavyarajumandya/Desktop/7.16_snapshot_upgrade/No_error_upgrade/kibana-7.16.0-SNAPSHOT-darwin-x86_64/node_modules/@elastic/elasticsearch/lib/Transport.js:367:23)
    at IncomingMessage.onEnd (/Users/bhavyarajumandya/Desktop/7.16_snapshot_upgrade/No_error_upgrade/kibana-7.16.0-SNAPSHOT-darwin-x86_64/node_modules/@elastic/elasticsearch/lib/Transport.js:291:11)
    at IncomingMessage.emit (node:events:402:35)
    at endReadableNT (node:internal/streams/readable:1343:12)
    at processTicksAndRejections (node:internal/process/task_queues:83:21) {
  meta: {
    body: { error: [Object], status: 400 },
    statusCode: 400,
    headers: {
      'x-opaque-id': 'd87eb419-e556-46ab-920a-f2413176921d',
      'x-elastic-product': 'Elasticsearch',
      'content-type': 'application/json; charset=UTF-8',
      'content-length': '877'
    },
    meta: {
      context: null,
      request: [Object],
      name: 'elasticsearch-js',
      connection: [Object],
      attempts: 0,
      aborted: false
    }
  }
}

[elasticmachine]

Pinging @elastic/kibana-vis-editors @elastic/kibana-vis-editors-external (Team:VisEditors)

[flash1293]

Dupe of #119445 - this will be fixed in 8.0

Great job spotting this!