Fix the kernel config to pass tests in the x86_64 CI Environment

[Code-Hex]

We encountered an issue where tests were failing in x86_64 environments on macOS 11 and later versions.
After investigation, I identified that some EFI-related settings were missing from the configuration of the x86_64 Linux kernel used in the tests. This caused booting issues. Although the tests remain somewhat flaky, I confirmed that they pass if the job is retried.

Additional documentation

• https://github.com/Code-Hex/puipui-linux/releases/tag/v1.0.3
• https://github.com/Code-Hex/vz/actions/runs/11576160671/job/32225511137

[Code-Hex]

Although a few tests have started passing, the tests are still highly flaky 😭

• The timeout set in actions does not seem to be effective.
• The failure rate of TestSingleDirectoryShare/read-write seems high.
• There are instances where tests hang after starting with === RUN Testxxx.

For now, I'll go ahead and merge this PR and continue investigating separately at https://github.com/Code-Hex/vz-ci-test