editor: Add prefix on newline in documentation block (e.g. JSDoc) (#30768)

Closes #8973

- [x] Tests


https://github.com/user-attachments/assets/7fc6608f-1c11-4c70-a69b-34bfa8f789a2

Release Notes:

- Added auto-insertion of asterisk (*) prefix when creating new lines
within JSDoc comment blocks.

crates/languages/src/javascript/config.toml

@@ -20,6 +20,8 @@ tab_size = 2
 scope_opt_in_language_servers = ["tailwindcss-language-server", "emmet-language-server"]
 prettier_parser_name = "babel"
 debuggers = ["JavaScript"]
+documentation_comment_prefix = "*"
+documentation_block = ["/**", "*/"]
 
 [jsx_tag_auto_close]
 open_tag_node_name = "jsx_opening_element"