Automatic merge from submit-queue (batch tested with PRs 50719, 51216, 50212, 51408, 51381)

Use constants instead of magic string for runtime names

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

Use constants instead of magic string for runtime names.

**Which issue this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close that issue when PR gets merged)*: fixes #51678

**Special notes for your reviewer**:

**Release note**:

```release-note
NONE
```