Line-number links in diff views are broken

Created by: plibither8

• Sourcegraph version: sourcegraph.com
• Platform information: macOS Monterey, Google Chrome v102

Steps to reproduce:

1. Open any diff view, like this
2. Click one the line-numbers either in unified or split view

Expected behavior:

The link should be an anchor relative to the current diff page, and should scroll to line number.

Example: https://sourcegraph.com/github.com/sourcegraph/sourcegraph/-/commit/24da09b7547fb59011eea5a4135bc2219ffcd9b6?visible=3#diff-2f2646f22e6965ade83312dfb963ed12L102

Actual behavior:

The link with the anchor is absolute to the base URL.

Example: https://sourcegraph.test:3443/#diff-2f2646f22e6965ade83312dfb963ed12L102