sqlalchemy update relationship with primaryjoin when object in other relationship is edited to not meet condition

Question

I have 2 relationships in the User class. One that contains all of the User's Bets (User.bets) and one that contains all of the User's Bets that don't have a winner (winner == 0) (User.active_bets). If I set the winner to 1 on an active bet using User.bets it doesn't update the active_bets relationship until session is closed/flushed. Is there any way I can link the 2 so when I make changes to a Bet from user.bets it checks if it matches the condition of primaryjoin on user.active_bets and removes it if winner != 0. I am also using SQL 2.0 with expire_on_commit = False

Code:

User Class:

class User():
  __tablename__ = "user"
  
  code = Column(String(8), primary_key=True)
  active_bets = relationship("Bet", primaryjoin="and_(Bet.user_id == User.code, Bet.winner == 0)", overlaps="active_bets, user", cascade="all, delete")
  bets = relationship("Bet", back_populates="user", cascade="all, delete", overlaps="active_bets, user")

Bet Class:

@mapper_registry.mapped
class Bet():
  
  __tablename__ = "bet"
  
  code = Column(String(8), primary_key = True, nullable=False)
  winner = Column(Integer, nullable=False)
  user_id = Column(Integer, ForeignKey("user.code"), nullable=False)
  user = relationship("User", back_populates="bets")

Test:

with Session.begin() as session:
  user = get_all_db("User", session)[0] #just gets the first user in table
  #print(user.active_bets) if user.active_bets is called all user.active_bets under will be []
  user.bets[-1].winner = 0
  user.bets[-2].winner = 0
  user.bets[-3].winner = 0
  bet = user.bets[-4]
  bet.winner = 0
  print(user.active_bets) #prints 4 bets

  bet.winner = 1
  print(bet.winner) #prints 1
  print(user.active_bets) #prints 4 bets
    
with Session.begin() as session:
  user = get_all_db("User", session)[0]
  print(user.active_bets) #prints 3 bets

I currently have a fix that reloads the session but I assume there is a better way.

My Solution:

with Session.begin() as session:
  user = get_all_db("User", session)[0] #just gets the first user in table
  #print(user.active_bets) if user.active_bets is called all user.active_bets under will be []
  user.bets[-1].winner = 0
  user.bets[-2].winner = 0
  user.bets[-3].winner = 0
  bet = user.bets[-4]
  bet.winner = 0
  print(user.active_bets) #prints 4 bets

  bet.winner = 1
  print(bet.winner) #prints 1

  session.flush([user.bets[-4]])
  session.refresh(user)
  print(user.active_bets) #prints 3 bets
    
with Session.begin() as session:
  user = get_all_db("User", session)[0]
  print(user.active_bets) #prints 3 bets

Is there a property of the relationship that checks if the the conditions are the same or something that automatically expires the relationship if the winner has been changed.