fix: Skip seat provisioning on org switch when billing flag disabled

[charlesvien]

Problem

I introduced this in the previous release. Switching organizations during onboarding triggered a free seat auto-provision for users without the billing flag enabled, even though every other entry point gates this behind BILLING_FLAG.

Changes

1. Read BILLING_FLAG via useFeatureFlag in ProjectSelectStep
2. Wrap the post-switch fetchSeat({ autoProvision: true }) call in a billingEnabled check
3. Align org switch behavior with the gating pattern in useSeatSync

How did you test this?

Manually

[charlesvien]

• fix: Skip seat provisioning on org switch when billing flag disabled #2022 👈 (View in Graphite)
• main

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[greptile-apps]

_{Reviews (1): Last reviewed commit: "Skip seat provisioning on org switch whe..." | Re-trigger Greptile}