Fix code scanning alert no. 15: Incomplete multi-character sanitization

Co-authored-by: Copilot Autofix powered by AI <62310815+github-advanced-security[bot]@users.noreply.github.com>

Author: tomhub

Diff for: app/reports/repository_contributors_stats.rb

@@ -71,10 +71,10 @@ def commits_per_author_with_aliases
       next if registered_committers.include? committer
 
       name = committer
-      loop do
+      previous = nil
+      while name != previous
         previous = name
         name = name.gsub(/<.+@.+>/, '').strip
-        break if name == previous
       end
       mail = committer[/<(.+@.+)>/, 1]
       merged << { name: name, mail: mail, commits: count, changes: changes_by_author[committer] || 0, committers: [committer] }