Implement hashed user ID cookie for analytics on Gitpod domains

[Siddhant-K-code]

Description

This PR introduces a new feature to set a hashed user ID cookie for analytics purposes on specific Gitpod domains. The cookie is set during the JWT refresh process, ensuring it's always up-to-date for authenticated users.

Changes:

• Added setHashedUserIdCookie method to SessionHandler class
• Integrated cookie setting logic into jwtSessionConvertor method
• Implemented domain-specific checks for cookie setting

Followup of #20226

Related Issue(s)

Fixes ENT-801

How to test

Documentation

Preview status

Gitpod was successfully deployed to your preview environment.

• 🏷️ Name - siddhant-e53e12238f3
• 🔗 URL - siddhant-e53e12238f3.preview.gitpod-dev.com/workspaces.
• 📚 Documentation - See our internal documentation for information on how to interact with your preview environment.
• 📦 Version - siddhant-ent-801-store-hasheduserid-in-cookie-storage-gha.28996
• 🗒️ Logs - GCP Logs Explorer

Build Options

Build

• /werft with-werft
  Run the build with werft instead of GHA
• leeway-no-cache
• /werft no-test
  Run Leeway with --dont-test

Publish

• /werft publish-to-npm
• /werft publish-to-jb-marketplace

Installer

• analytics=segment
• with-dedicated-emulation
• workspace-feature-flags
  Add desired feature flags to the end of the line above, space separated

Preview Environment / Integration Tests

• /werft with-local-preview
  If enabled this will build install/preview
• /werft with-preview
• /werft with-large-vm
• /werft with-gce-vm
  If enabled this will create the environment on GCE infra
• /werft preemptible
  Saves cost. Untick this only if you're really sure you need a non-preemtible machine.
• with-integration-tests=all
  Valid options are all, workspace, webapp, ide, jetbrains, vscode, ssh. If enabled, with-preview and with-large-vm will be enabled.
• with-monitoring

/hold

[filiptronicek]

Code LGTM, waiting for preview env to test once more

[Siddhant-K-code]

Confirmed it here (internal conv.) & its working

[Siddhant-K-code]

/unhold