Follow file symlinks in the UI to their target (#28835)

Symlinks are followed when you click on a link next to an entry, either
until a file has been found or until we know that the link is dead.
When the link cannot be accessed, we fall back to the current behavior
of showing the document containing the target.

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Co-authored-by: wxiaoguang <wxiaoguang@gmail.com>

options/locale/locale_en-US.ini

@@ -2782,6 +2782,7 @@ topic.done = Done
 topic.count_prompt = You cannot select more than 25 topics
 topic.format_prompt = Topics must start with a letter or number, can include dashes ('-') and dots ('.'), can be up to 35 characters long. Letters must be lowercase.
 
+find_file.follow_symlink= Follow this symlink to where it is pointing at
 find_file.go_to_file = Go to file
 find_file.no_matching = No matching file found