fix: importPage URl decoding should use decodeURIComponent (#4187)

* fix: importPage URl decoding should use decodeURIComponent

* Create hungry-beds-brush.md

* Update packages/nextra/src/client/pages.ts

---------

Co-authored-by: Dimitri POSTOLOV <dmytropostolov@gmail.com>

Author: pengx17

.changeset/hungry-beds-brush.md

@@ -0,0 +1,5 @@
+---
+"nextra": patch
+---
+
+use `decodeURIComponent` instead `decodeURI` to properly decode `&` character

packages/nextra/src/client/pages.ts

@@ -8,7 +8,8 @@ export async function importPage(pathSegments: string[] = [], lang = '') {
   const RouteToFilepath = await getRouteToFilepath(lang)
 
   const pathname = pathSegments.join('/')
-  const decodedPath = decodeURI(pathname) // handle non-"\w" characters
+  // handle non-"\w" characters,`decodeURIComponent` decodes `%26` (`&`) character
+  const decodedPath = decodeURIComponent(pathname)
 
   const pagePath = RouteToFilepath[decodedPath]
   try {