Make selection more consistent across languages (#17084)

- Remove "-" from word_character for CSS/JS/TSX/Markdown
- Makes our word-selection behavior consistent across language modes (and consistent with VSCode).

crates/languages/src/css/config.toml

@@ -9,6 +9,5 @@ brackets = [
     { start = "\"", end = "\"", close = true, newline = false, not_in = ["string", "comment"] },
     { start = "'", end = "'", close = true, newline = false, not_in = ["string", "comment"] },
 ]
-word_characters = ["-"]
 block_comment = ["/* ", " */"]
 prettier_parser_name = "css"