Difference in last line rendering. Browse file two lines, MR - one line.

Summary
There is an inconsistency in how GitLab renders files with a trailing newline (\n):

• In the file view, the newline is rendered correctly (shown as an empty line).
• In the diff view, the same newline is not rendered at all — making it appear as if the file ends without one.

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Steps to reproduce

1. Create a new file with a single line ending in a newline character, e.g. FOO=BAR\n.
2. Commit and push the file to GitLab.
3. View the file in the repository browser (file view).
4. View the same file in a merge request or commit diff (diff view).

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Environment info

• GitLab version: Self hosted 18.3.2

• Reproduced with multiple file types (.env, .conf, .bazeliskrc, .txt)

• Render the trailing newline in the diff view as an empty line

• Add visual markers or toggles for end-of-line characters

• Align the diff view behavior with the file view for consistency