CommitLog order does not reflect order of commits.

Hi!

I am currently working on an E2E test which involves creating many commits, I am running into some issues however.
The repository's commit log order is different compared to the order of commits I have made.

Reproduction steps

public LibGitRepositoryBuilder WithManyCommits(int numberOfCommits, string commitMessage)
{
    for (int i = 0; i < numberOfCommits; i++)
    {
        // Create & stage file.
        var filePath = Path.Combine(_repoPath, $"{Guid.NewGuid()}.txt");
        File.Create(filePath).Dispose();

        var relativeFilePathToRoot = Path.GetRelativePath(_repository.Info.WorkingDirectory, filePath);
        Commands.Stage(_repository, relativeFilePathToRoot);
        _repository.Commit($"{commitMessage}-{i}", new Signature("bot", "bot@noreply.com", DateTimeOffset.UtcNow), new Signature("bot", "bot@noreply.com", DateTimeOffset.UtcNow));
    }

    return this;
}

var repo = new LibGitRepositoryBuilder(path)
    .WithManyCommits(100, "Hello world")
    .Build();

Expected behavior

• "Hello world-99"
• "Hello world-98"
• "Hello world-97"
• ....

Actual behavior

Version of LibGit2Sharp (release number or SHA1)

0.30.0

Operating system(s) tested; .NET runtime tested

OS
Edition Windows 11 Pro for Workstations
Version 23H2
Installed on ‎22/‎02/‎2024
OS build 22631.3593
Experience Windows Feature Experience Pack 1000.22700.1003.0

.NET
.NET 8.0

首先，使用所示的 LibGitRepositoryBuilder.WithManyCommits 示例重现排序问题，并检查 repository 提交日志的枚举方式。Issue 中没有指定源文件或测试，因此请先找到 CommitLog 实现和现有的日志测试。完成的标准是：按顺序创建的提交会按预期以最新的提交在前的顺序出现。