fix: pseudo styles being removed with postcssIsolateStyles

closes #2868
closes #2867

Author: brc-dd

src/node/postcss/index.ts

@@ -1,17 +1,13 @@
 import postcssPrefixSelector from 'postcss-prefix-selector'
 
-type Options = Parameters<typeof postcssPrefixSelector>[0] & {
-  enable?: boolean
-}
+type Options = Parameters<typeof postcssPrefixSelector>[0]
 
-export function postcssIsolateStyles(_options: Options = {}) {
-  const { enable, ...options } = _options
-  if (enable === false) return false
+export function postcssIsolateStyles(options: Options = {}) {
   return postcssPrefixSelector({
     prefix: ':not(:where(.vp-raw, .vp-raw *))',
     includeFiles: [/base\.css/],
     transform(prefix, _selector) {
-      const [selector, pseudo = ''] = _selector.split(/:\S*$/)
+      const [selector, pseudo = ''] = _selector.split(/(:\S*)$/)
       return selector + prefix + pseudo
     },
     ...options