No more repeated trusted-device enrollment after this computer is refused

Some accounts require the computer to be enrolled as a trusted device. When the server refuses this computer as untrusted, Claude Code now behaves like this:

• It renews the trusted-device enrollment and retries once.
• If the server still refuses, it shows a message saying it still refused this computer after the enrollment was renewed.
• If the refused device token came from an enrollment made after an earlier refusal, it does not enroll again until a sign-in clears it.
• If the saved time of the last enrollment is unusable, it skips enrolling.

Before, it enrolled again whenever a waiting period had passed.