Ignore whitespace in git blame invocation (#35960)

This works around a bug wherein inline git blame is unavailable for
files with CRLF line endings. At the same time, this prevents users from
seeing whitespace-only changes in the editor's git blame

Closes #35836

Release Notes:

- N/A *or* Added/Fixed/Improved ...
7df8e05ad9Filip Binkiewicz committed on 8/12/2025, 6:47:15 PM· committed by GitHubparentd030bb6
1 file changedLine totals unavailable