fix(card): ensure subtitle stays at bottom by wrapping title/subtitle… (#877)

* fix(card): ensure subtitle stays at bottom by wrapping title/subtitle in container

* Update layouts/_partials/shortcodes/card.html

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>

---------

Co-authored-by: Xin <5097752+imfing@users.noreply.github.com>
Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>

layouts/_partials/shortcodes/card.html

@@ -46,7 +46,7 @@
     {{- $padding = "hx:pt-4 hx:px-4" -}}
   {{- end -}}
 
-
+  <div class="hx:mt-auto">
     <span class="hextra-card-icon hx:flex hx:font-semibold hx:items-start hx:gap-2 {{ $padding }} hx:text-gray-700 hx:hover:text-gray-900 hx:dark:text-neutral-200 hx:dark:hover:text-neutral-50">
       {{- with $icon }}{{ partial "utils/icon.html" (dict "name" $icon) -}}{{- end -}}
       {{- $title -}}
@@ -54,6 +54,7 @@
     {{- with $subtitle -}}
       <div class="hextra-card-subtitle hx:line-clamp-3 hx:text-sm hx:font-normal hx:text-gray-500 hx:dark:text-gray-400 hx:px-4 hx:mb-4 hx:mt-2">{{- $subtitle | markdownify -}}</div>
     {{- end -}}
+  </div>
 
   {{- if $tag }}
     {{- partial "shortcodes/badge.html" (dict