refactor(themes): removed `ui.highlight` effects from `solarized_dark` (#10261)

runtime/themes/solarized_dark.toml

@@ -79,8 +79,6 @@
 "ui.text" = { fg = "base1" }
 # 影响 picker列表选中, 快捷键帮助窗口文本
 "ui.text.focus" = { fg = "blue", modifiers = ["bold"]}
-# file picker中， 预览的当前选中项
-"ui.highlight" = { fg = "red", modifiers = ["bold", "italic", "underlined"] }
 
 # 主光标/selectio
 "ui.cursor.primary" = { fg = "base03", bg = "base1" }