fix(render-image): use page resources for relative images in i18n page bundles (#938)

* fix(layout): Images missing (404) in multilingual (i18n) Page Bundles due to Markdown render hook

* fix(layout): Changed to .PageInner based on PR review to support included shortcodes correctly

* refactor(render-image): simplify i18n page bundle resource lookup

Use single PathUnescape + TrimPrefix expression instead of six
Get attempts; keep same behavior for bundle images and fallback.

* refactor: simplify resource path handling in render-image.html

* Add comment for multilingual permalink handling

Added comment for multilingual permalink resolution in render-image.html

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Co-authored-by: Xin <5097752+imfing@users.noreply.github.com>

layouts/_markup/render-image.html

@@ -23,10 +23,18 @@
       {{/* Images under static directory */}}
       {{- $dest = (relURL (strings.TrimPrefix "/" $dest)) -}}
     {{- end -}}
-  {{- else if and $isPage (not $startsWithRelative) -}}
-    {{/* Images that are sibling to the individual page file */}}
+  {{- else -}}
+    {{/* Resolve page bundle resource for multilingual permalink */}}
+    {{- with .PageInner.Resources.Get (strings.TrimPrefix "./" $url.Path) -}}
+      {{- $query := cond $url.RawQuery (printf "?%s" $url.RawQuery) "" -}}
+      {{- $fragment := cond $url.Fragment (printf "#%s" $url.Fragment) "" -}}
+      {{- $dest = printf "%s%s%s" .RelPermalink $query $fragment -}}
+    {{- else -}}
+      {{- if and $isPage (not $startsWithRelative) -}}
         {{ $dest = (printf "../%s" $dest) }}
       {{- end -}}
+    {{- end -}}
+  {{- end -}}
 {{- end -}}
 
 {{- $attributes := "" -}}