fix: prefix navigate calls with pathPrefix

Fixes gatsbyjs#8155

packages/gatsby-link/src/index.js

@@ -138,7 +138,7 @@ class GatsbyLink extends React.Component {
             e.preventDefault()
             // Is this link pointing to a hash on the same page? If so,
             // just scroll there.
-            const { pathname, hash } = parsePath(prefixedTo)
+            const { pathname, hash } = parsePath(to)
             if (pathname === location.pathname || !pathname) {
               const element = hash
                 ? document.getElementById(hash.substr(1))
@@ -154,7 +154,7 @@ class GatsbyLink extends React.Component {
 
             // Make sure the necessary scripts and data are
             // loaded before continuing.
-            navigate(prefixedTo, { state, replace })
+            navigate(to, { state, replace })
           }
 
           return true
@@ -183,21 +183,21 @@ const withLocation = Comp => props => (
 export default withLocation(GatsbyLink)
 
 export const navigate = (to, options) => {
-  window.___navigate(to, options)
+  window.___navigate(withPrefix(to), options)
 }
 
 export const push = to => {
   console.warn(
     `The "push" method is now deprecated and will be removed in Gatsby v3. Please use "navigate" instead.`
   )
-  window.___push(to)
+  window.___push(withPrefix(to))
 }
 
 export const replace = to => {
   console.warn(
     `The "replace" method is now deprecated and will be removed in Gatsby v3. Please use "navigate" instead.`
   )
-  window.___replace(to)
+  window.___replace(withPrefix(to))
 }
 
 // TODO: Remove navigateTo for Gatsby v3