Prebuild triggered on project creation does not get reported as usage

[jldec]

Unlike prebuilds triggered by a commit webhook, the prebuild triggered after new project creation is not recorded in d_b_usage.

NOTE This may be moot if we stop auto-triggering prebuilds on new projects. (#15281)

Example workspace instance below - looks like the startedTime is missing

{
  "id": "26a24057-cd7b-4e03-bdcb-28190a69fa3c",
  "workspaceId": "jldec-teamwowproject-l9n8921gofu",
  "creationTime": "2022-12-10T10:41:17.513Z",
  "startedTime": "",
  "stoppedTime": "2022-12-10T10:43:14.344Z",
  "lastHeartbeat": "",
  "ideUrl": "https://jldec-teamwowproject-l9n8921gofu.ws-eu78.gitpod.io",
  "status_old": null,
  "workspaceImage": "eu.gcr.io/gitpod-dev/workspace-images:3537a65c39f3373206fe0e6bdf38ae4bc221068731c57ddce7a798aa4a91b15a",
  "region": "eu78",
  "deployedTime": "",
  "workspaceBaseImage": "",
  "_lastModified": "2022-12-10 10:43:14.349798 UTC",
  "status": "{\"repo\": {\"branch\": \"main\", \"latestCommit\": \"e7e873a35f6264ccbb27f0a929596f48d81b5e9c\", \"totalUntrackedFiles\": 0, \"totalUncommitedFiles\": 0, \"totalUnpushedCommits\": 0}, \"phase\": \"stopped\", \"nodeIp\": \"10.10.0.29\", \"message\": \"\", \"podName\": \"prebuild-26a24057-cd7b-4e03-bdcb-28190a69fa3c\", \"timeout\": \"30m0s\", \"version\": 109488963190786, \"nodeName\": \"headless-ws-eu78-pool-z4xg\", \"conditions\": {\"failed\": \"\", \"timeout\": \"\", \"deployed\": false, \"pullingImages\": false, \"stoppedByRequest\": false, \"headlessTaskFailed\": \"\"}, \"ownerToken\": \"xxx\", \"exposedPorts\": []}",
  "phase": "stopped",
  "deleted": "0",
  "phasePersisted": "stopped",
  "configuration": "{\"ideImage\":\"eu.gcr.io/gitpod-core-dev/build/ide/code:commit-8335b0de46d748b9d12119bc7cbdf8554a9e121c\",\"ideImageLayers\":[],\"supervisorImage\":\"eu.gcr.io/gitpod-core-dev/build/supervisor:commit-478a75e744a642d9b764de37cfae655bc8b29dd5\",\"ideConfig\":{\"useLatest\":false},\"featureFlags\":[\"workspace_psi\",\"workspace_class_limiting\"]}",
  "stoppingTime": "2022-12-10T10:43:11.505Z",
  "imageBuildInfo": null,
  "workspaceClass": "g1-standard",
  "usageAttributionId": "team:b3ddef51-43cf-4fb3-ad0b-3edbd4e57c96"
}

[svenefftinge]

Since the instance never actually started there is no usage.
We are filtering for instances by startedTime != ''