Automatic merge from submit-queue (batch tested with PRs 52264, 51870)

Use credentials from providers for docker sandbox image

**What this PR does / why we need it**:

Sandbox image lookup uses creds from docker config only; other credential providers are ignored. This is a regression introduced in dockershim.

**Which issue this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close that issue when PR gets merged)*: fixes #51293

**Special notes for your reviewer**:

Should also cherry-pick this to release-1.6 and release-1.7.

**Release note**:

```release-note
Fix credentials providers for docker sandbox image.
```