Update job log page UI

What does this MR do and why?

• Vertically align caret
• Update border radius

What does this MR not do?

Remove the border under metadata at top (updated in Job page: restructre page (!130317 - merged))

Screenshots or screen recordings

Before	After

How to set up and validate locally

UX Paper Cuts 16.4 → Pipelines and Jobs (#408231 - closed)