fix(auth): activate account on password reset and fix is_active check order

- reset_password sets is_active=True so users with unverified accounts
  can log in after using the forgot-password flow
- admin set_password also sets is_active=True for the same reason
- auth() now checks is_active before verifying the password, ensuring
  inactive users always see the email-verification prompt regardless of
  password correctness (avoids leaking password validity)"

Co-authored-by: christianlouis <361235+christianlouis@users.noreply.github.com>

app/api/admin_users.py

@@ -488,9 +488,11 @@ def admin_set_password(
         raise HTTPException(status_code=status.HTTP_404_NOT_FOUND, detail="Local user not found.")
 
     user.hashed_password = hash_password(body.password)
-    # Clear any outstanding reset tokens
+    # Clear any outstanding reset tokens and activate the account so the user
+    # can log in immediately after an admin sets their password.
     user.password_reset_token = None
     user.password_reset_sent_at = None
+    user.is_active = True
 
     try:
         db.commit()