test: Debug system-reinstall-bootc failure

[henrywang]

This PR is to debug system-reinstall-bootc test failure and fix it.

[gemini-code-assist]

Code Review

This pull request aims to debug and fix a test failure in system-reinstall-bootc. The change involves adding a check for the existence of the usr/lib directory and reordering the list of files to be checked in the test. My review focuses on improving the maintainability of this list. I've suggested sorting the file paths alphabetically for better readability and pointed out that the check for usr/lib might be redundant.

[gemini-code-assist]

For improved readability and maintainability, consider sorting this list of paths alphabetically.

Also, the check for "usr/lib" appears to be redundant since other paths in the list are located within it. If those checks pass, usr/lib is guaranteed to exist. If this was added for debugging, you may want to remove it.

Suggested change

	let files = [
	"usr/lib/bootc/fedora-bootc-destructive-cleanup",
	"usr/lib",
	"usr/lib/systemd/system/bootc-destructive-cleanup.service",
	"etc/tmpfiles.d/bootc-root-ssh.conf",
	"usr/lib/bootc/fedora-bootc-destructive-cleanup",
	];
	let files = [
	"etc/tmpfiles.d/bootc-root-ssh.conf",
	"usr/lib",
	"usr/lib/bootc/fedora-bootc-destructive-cleanup",
	"usr/lib/systemd/system/bootc-destructive-cleanup.service",
	];

[henrywang]

According to result https://github.com/bootc-dev/bootc/actions/runs/19290621315/job/55160247510?pr=1756, this failure looks like a flaky. Re-run all failed tests in PRs and see what happens.

[henrywang]

Test passed in #1746. Close this PR.