chore: bump version to 2.21.2 in package.json and update feature flags for account settings (#412)

- Incremented application version from 2.21.0 to 2.21.2 in package.json.
- Added logic to conditionally show email option in account settings based on enabled authentication methods.
- Updated PersonalAccountSettingsContainer to utilize the new showLinkEmailOption feature flag.
- Refactored migration script to correct delimiter usage for better parsing of migration lines.

apps/web/app/home/(user)/settings/page.tsx

@@ -10,9 +10,16 @@ import { createI18nServerInstance } from '~/lib/i18n/i18n.server';
 import { withI18n } from '~/lib/i18n/with-i18n';
 import { requireUserInServerComponent } from '~/lib/server/require-user-in-server-component';
 
+// Show email option if password, magic link, or OTP is enabled
+const showEmailOption =
+  authConfig.providers.password ||
+  authConfig.providers.magicLink ||
+  authConfig.providers.otp;
+
 const features = {
-  enableAccountDeletion: featureFlagsConfig.enableAccountDeletion,
+  showLinkEmailOption: showEmailOption,
   enablePasswordUpdate: authConfig.providers.password,
+  enableAccountDeletion: featureFlagsConfig.enableAccountDeletion,
   enableAccountLinking: authConfig.enableIdentityLinking,
 };