Fix a few issues in "Zip-Nuget-Java-Nodejs Packaging Pipeline" (#21014)
### Description
Fix a few issues in the Windows TRT job in "Zip-Nuget-Java-Nodejs
Packaging Pipeline":
1. It is a Windows job. It should not use bash(which is usually not
available on Windows).
2. When it sets ADO vars, it missed a semicolon
Here is the doc of how to set ADO vars via scripts:
https://learn.microsoft.com/en-us/azure/devops/pipelines/process/set-variables-scripts?view=azure-devops&tabs=bash
You could see it needs a semicolon . Without the semicolon , the vars
will have an extra quotation mark in their values.