telemetry(amazonq): folder level telemetry data undefined issue

[KevinDing1]

Problem

When users don't choose a different folder during document generation, the current telemetry will log folder level as undefined

Solution

Change the default workspace value to "Entire Workspace" to match the default behavior of the UX flow.

[github-actions]

• This pull request modifies code in src/* but no tests were added/updated.
  • Confirm whether tests should be added or ensure the PR description explains why tests are not required.
• This pull request implements a feat or fix, so it must include a changelog entry (unless the fix is for an unreleased feature). Review the changelog guidelines.
  • Note: beta or "experiment" features that have active users should announce fixes in the changelog.
  • If this is not a feature or fix, use an appropriate type from the title guidelines. For example, telemetry-only changes should use the telemetry type.