fix(auth): append generateId() suffix to Wealthbox account IDs to match codebase pattern

All other providers use `${stableId}-${generateId()}` so the account.create.after
hook can strip the UUID suffix, find stale sibling rows, and migrate credential FKs.
Without the suffix the migration logic is skipped and reconnections would hit
duplicate key conflicts instead of gracefully updating credentials.

Author: waleedlatif1

apps/sim/lib/auth/auth.ts

@@ -1641,7 +1641,7 @@ export const auth = betterAuth({
                 const name = data.name || data.full_name || data.username || 'Wealthbox User'
 
                 return {
-                  id: `wealthbox-${userId}`,
+                  id: `wealthbox-${userId}-${generateId()}`,
                   name,
                   email,
                   emailVerified: false,
@@ -1666,7 +1666,7 @@ export const auth = betterAuth({
               }
               const tokenHash = createHash('sha256').update(stableToken).digest('hex').slice(0, 24)
               return {
-                id: `wealthbox-${tokenHash}`,
+                id: `wealthbox-${tokenHash}-${generateId()}`,
                 name: 'Wealthbox User',
                 email: `wealthbox-${tokenHash}@wealthbox.user`,
                 emailVerified: false,