Fix usage data count start/finish export issue

What does this MR do?

Fix usage data count start/finish export issue

Related to #325884 (closed)

Before

  :issues_with_health_status: SELECT COUNT("issues"."{:start=>1, :finish=>1048}")
    FROM "issues" WHERE "issues"."health_status" IS NOT NULL

After

  :issues_with_health_status: SELECT COUNT("issues"."id") FROM "issues" WHERE "issues"."health_status"
    IS NOT NULL

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