How to block an auction owner from bidding on his own auction

-- HikaShop version -- : 6.3.0
-- HikaAuction version -- : 5.0.1
-- Joomla version -- : 6
-- PHP version -- : 8.4

Dear Team

I have noticed that, on Hikaauction, users are currently permitted to place bids on auctions they have created.

Could you please advise on how to implement a restriction to prevent auction owners from bidding on their own listings?

Thank you

Great job as usual, thank you Nicolas one more time

Just 1 more thing..
there is another text to hide for the auction's owner (see attachment)

Thank you again

Additionally, I would like you to notice that the leading bidder in an auction should also be restricted from bidding against his own existing highest bid.

As shown in the attachment, this can lead to issues where a bidder inadvertently increases his own price due to a mistaken click, resulting in unnecessary complaints for the site owner...