feat(webapp): let users select the Free plan without GitHub verification

Selecting Free now provisions the plan immediately instead of routing
through a GitHub connect/verification step. Remove the 'Unlock Free plan' /
'Connect to GitHub' dialog, the GitHub-verified badge, and the account-
rejected state from the plan picker, simplify the setPlan free-result
handling to a success redirect, and delete the now-unreachable free-connect
return routes. The billing service provisions the free plan directly.

Author: matt-aitken

.server-changes/fix-managed-cloud-org-activation.md

@@ -3,4 +3,4 @@ area: webapp
 type: fix
 ---
 
-New managed-cloud orgs were created already activated, so they skipped the select-plan flow that provisions their billing entitlement — leaving the free-tier usage cap unenforced. Managed-cloud orgs are now created deactivated and routed through select-plan, which activates them once a plan is selected. Self-hosters have no billing gate and remain active immediately.
+Select plan flow when creating an org. Don't require GitHub verification to access the free plan.

apps/webapp/app/routes/_app.orgs.$organizationId.subscription.v3.free_connect_failed/route.tsx

@@ -73,7 +73,6 @@ export default function ChoosePlanPage() {
                 subscription={v3Subscription}
                 organizationSlug={organizationSlug}
                 hasPromotedPlan
-                showGithubVerificationBadge
                 periodEnd={periodEnd}
               />
             </div>