fix: skip resource prefetch for Area entities

Areas in ros2_medkit are pure namespace groupings without their own
data/operations/configurations/faults collections. The gateway returns
404 on /areas/{id}/data etc., which surfaced as noisy errors whenever
an Area was selected in the entity tree. Skip the prefetch entirely
for Areas so entity selection stays silent.

Author: bburda

src/components/EntityDetailPanel.tsx

@@ -403,20 +403,19 @@ export function EntityDetailPanel({ onConnectClick, viewMode = 'entity', onEntit
             const entityId = selectedEntity.id;
             const isComponent = selectedEntity.type === 'component';
             const isApp = selectedEntity.type === 'app';
-            const isArea = selectedEntity.type === 'area';
             const isFunction = selectedEntity.type === 'function';
 
-            // Only fetch counts for entity types that have resources
-            if (!isComponent && !isApp && !isArea && !isFunction) {
+            // Areas are pure groupings in ros2_medkit and the gateway returns 404
+            // on /areas/{id}/data etc. Skip resource prefetch for them to avoid
+            // surfacing spurious errors on entity selection.
+            if (!isComponent && !isApp && !isFunction) {
                 setResourceCounts({ data: 0, operations: 0, configurations: 0, faults: 0 });
                 setTopicsData([]);
                 return;
             }
 
-            // Determine entity type for API calls
             let entityType: SovdResourceEntityType = 'components';
             if (isApp) entityType = 'apps';
-            else if (isArea) entityType = 'areas';
             else if (isFunction) entityType = 'functions';
 
             try {