Synchronize the fixes from #1936, #1824, and #1961 across translated editions and normalize C# and Dart formatting. Move Java CI to Ubuntu 24.04 so its Java 11/17 checks can run.
Add dedicated chapter exercise sections and generated exercise pages for the English, Japanese, and Russian editions.
Add navigation for all published languages while keeping Taiwan Traditional Chinese exercise pages generated at build time.
* docs(ru): replace prose quotes with guillemets
* docs(ru): replace prose semicolons with periods
* docs(ru): align animation title forms
* docs(ru): align figure and table references