fix: Karten-Höhe auf gs-h=8 zurückgesetzt (war auf 4 gefallen)

HTML-Attribut wieder an den DEFAULT_LAYOUT in layout.js angeglichen.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

src/static/dashboard.html

@@ -278,7 +278,7 @@
                         </div>
                     </div>
 
-                    <div class="grid-stack-item" gs-id="karte" gs-x="0" gs-y="9" gs-w="12" gs-h="4" gs-min-w="6" gs-min-h="3">
+                    <div class="grid-stack-item" gs-id="karte" gs-x="0" gs-y="9" gs-w="12" gs-h="8" gs-min-w="6" gs-min-h="3">
                         <div class="grid-stack-item-content">
                             <div class="card map-card">
                                 <div class="card-header">