Merge branch 'bw-file-try-fix' into 'master'

Remove an unnecessary conditional

See merge request https://gitlab.com/gitlab-org/gitlab/-/merge_requests/104879



Merged-by: Bob Van Landuyt <bob@gitlab.com>
Approved-by: Bob Van Landuyt <bob@gitlab.com>
Co-authored-by: Brett Walker <bwalker@gitlab.com>

lib/gitlab/gfm/uploads_rewriter.rb

@@ -54,7 +54,6 @@ def transform_markdown(markdown)
         file = find_file(match[:secret], match[:file])
 
         # No file will be returned for a path traversal
-        return markdown if file.nil?
         return markdown unless file.try(:exists?)
 
         klass = @target_parent.is_a?(Namespace) ? NamespaceFileUploader : FileUploader