Rollup merge of #136186 - Ayush1325:uefi-process-args-fix, r=nicholasbishop,Noratrieb

uefi: process: Fix args

- While working on process env support, I found that args were currently broken. Not sure how I missed it in the PR, but well here is the fix.
- Additionally, no point in adding space at the end of args.

Author: fmease