FeatureFlagsDialog leaves derived grace-stamp flags in overrides when unsetting runOpsMintKind and unlocks them when toggling read-only flags #5062

hey! noticed in a7f0f90e (apps/webapp/app/components/admin/FeatureFlagsDialog.tsx) that unsetFlag(key) only deletes overrides[key] and doesn't clear derivedFlagsClearedWith(key) (runOpsMintKindPrev and runOpsMintKindFlippedAt), so unsetting runOpsMintKind leaves its effect: "derived" grace-stamp rows highlighted in the dialog and visible in Preview JSON even though they have no unset button and withMintFlipGrace deletes them on save. also noticed isLocked (!unlocked && ORG_LOCKED_FLAGS.includes(key)) unlocks effect === "derived" rows into editable inputs when checking "Unlock read-only flags", even though the v2 action strips runOpsMintKindPrev and runOpsMintKindFlippedAt from the request body.

should unsetFlag also remove derivedFlagsClearedWith(key) from overrides and keep effect === "derived" flags read-only? happy to open a quick PR if you want!

ss