fix(config): fix deletion of profiles on some systems

[Manuelvaas]

Description

relates to STACKITCLI-389

Checklist

• Issue was linked above
• Code format was applied: make fmt
• Examples were added / adjusted (see e.g. here)
• Docs are up-to-date: make generate-docs (will be checked by CI)
• Unit tests got implemented or updated
• Unit tests are passing: make test (will be checked by CI)
• No linter issues: make lint (will be checked by CI)

[github-actions]

Merging this branch will not change overall coverage

Impacted Packages	Coverage Δ	🤖
github.com/stackitcloud/stackit-cli/internal/cmd/config/profile/delete	27.03% (ø)

---

Coverage by file

Changed files (no unit tests)

Changed File	Coverage Δ	Total	Covered	Missed	🤖
github.com/stackitcloud/stackit-cli/internal/cmd/config/profile/delete/delete.go	27.03% (ø)	37	10	27

Please note that the "Total", "Covered", and "Missed" counts above refer to code statements instead of lines of code. The value in brackets refers to the test coverage of that file in the old version of the code.

[cgoetz-inovex]

regarding testing:

// regression test for STACKITCLI-389
func TestDeleteProfileWithoutKeyring(t *testing.T) {
	params := testparams.NewTestParams()
	params.Printer.AssumeYes = true
	profile := fmt.Sprintf("test-profile-%s", time.Now().Format("20060102150405"))
	path := config.GetProfileFolderPath(profile)
	t.Cleanup(func() {
		err := os.RemoveAll(path)
		if err != nil {
			t.Fatalf("cleanup: remove profile folder at path %q: %v", path, err)
		}
	})
	err := config.ValidateProfile(profile)
	if err != nil {
		t.Fatalf("validate profile %q: %v", profile, err)
	}
	err = config.CreateProfile(params.Printer, profile, true, false, true)
	if err != nil {
		t.Fatalf("create profile %q: %v", profile, err)
	}
	keyring.MockInitWithError(keyring.ErrUnsupportedPlatform)
	deleteCmd := NewCmd(params.CmdParams)
	err = deleteCmd.RunE(deleteCmd, []string{profile})
	if err != nil {
		t.Fatalf("run cmd: %v", err)
	}
	if _, err := os.Stat(path); !os.IsNotExist(err) {
		t.Fatalf("expected profile folder to be deleted, but it still exists at path %q", path)
	}
}