fix: allow to name module std in project (#4353)

add missing prefix '::' for use of 'core' or 'std' module

RELATED #4331

packages/router-macro/src/segment.rs

@@ -314,14 +314,14 @@ pub(crate) fn create_error_type(
             #(#error_variants,)*
         }
 
-        impl std::fmt::Debug for #error_name {
-            fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
+        impl ::std::fmt::Debug for #error_name {
+            fn fmt(&self, f: &mut ::std::fmt::Formatter<'_>) -> ::std::fmt::Result {
                 write!(f, "{}({})", stringify!(#error_name), self)
             }
         }
 
-        impl std::fmt::Display for #error_name {
-            fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
+        impl ::std::fmt::Display for #error_name {
+            fn fmt(&self, f: &mut ::std::fmt::Formatter<'_>) -> ::std::fmt::Result {
                 match self {
                     Self::ExtraSegments(segments) => {
                         write!(f, "Found additional trailing segments: {}", segments)?