Follow up fix for #20472 (#20484)
### Description
<!-- Describe your changes. -->
Error:
**Artifact name input: e2e_test_logs_1364625_$(Date:yyyyMMddHHmmss)
##[error]Artifact name is not valid:
e2e_test_logs_1364625_$(Date:yyyyMMddHHmmss). It cannot contain '\', /',
"', ':', '<', '>', '|', '*', and '?'**
Date not correctly showing up in the artifact name. Use predefined
pipeline variable BuildNumber instead which also serves similarly as a
timestamp.
### Motivation and Context
<!-- - Why is this change required? What problem does it solve?
- If it fixes an open issue, please link to the issue here. -->
RN CI failure
---------
Co-authored-by: rachguo <rachguo@rachguos-Mac-mini.local>
Co-authored-by: rachguo <rachguo@rachguos-Mini.attlocal.net>
