feat: Reduce stat operation if we are reading all

[Xuanwo]

Which issue does this PR close?

None

Rationale for this change

We used to perform a stat operation to make sure we have the read size known. But in the read_all cases, we don't need to care about that.

What changes are included in this PR?

This PR refactor the internal range parse logic so that we can read all without fetching it's metadata first.

Are there any user-facing changes?

[dqhl76]

Thanks for your work! The code LGTM. However, I am not sure if the failed test related with this PR because it has so many lines of log information, it makes me hard to find the specific failed test 😢.

[Xuanwo]

Thanks a lot for your review!

Thanks for your work! The code LGTM. However, I am not sure if the failed test related with this PR because it has so many lines of log information, it makes me hard to find the specific failed test 😢.

• Aliyun Drive and Google Drive are unstable; this is a known issue.
• I will try to make the logs less verbose.