SSH asking passwords in the terminal instead of GUI after session kill

Sometimes my Linux Mint 22.1 Cinnamon installation takes too much RAM and I have to kill the session. To avoid restarting the computer, I press Ctrl+Alt+Del instead of holding the power button for 5 seconds. But when I try to connect to an SSH server (e.g. when I do a git push), I have to enter the password in the terminal:

lfavole@laurent-linuxmint:~$ ssh git@github.com
Enter passphrase for key '/home/lfavole/.ssh/id_ed25519':

instead of in this GUI prompt:  And the terminal prompt occurs every time that I want to connect via SSH / push something to a repo, and I am mirroring my Git repositories to 3 platforms, whereas the GUI prompt pops up only once per session. How can I restart the keyring process to get the GUI prompt back?