Pull requests should have a draggable splitter between the target branch's code and source branch's code when using split layout

[JonathonMinardSP]

🏷️ Discussion Type

Product Feedback

Body

In Azure DevOps pull requests, when I select a file I can see the target branch's code on the left and the source branch's code on the right. Between these 2 views is a splitter which I can drag to make the left side smaller whenever I want.

In GitHub pull requests, there's an option to show the Layout as Split, which mimics how I had Azure DevOps configured. But the divider between the target branch's code on the left and the source branch's code on the right cannot be dragged. This is inconvenient when there's long lines on the right side, or I just want to focus harder on the right side.

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