[fix](trx-frontend-http): fix map not loading on direct /map navigation

navigateToTab now calls loadPluginsForTab to ensure map-core.js is
injected on initial page load from /map URL. map-core.js auto-inits the
map if the map tab is already visible when the module loads.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
Signed-off-by: Stan Grams <sjg@haxx.space>

src/trx-client/trx-frontend/trx-frontend-http/assets/web/app.js

@@ -4373,6 +4373,7 @@ function navigateToTab(name, options = {}) {
     updateTabHistory(name, replaceHistory);
   }
   scheduleSpectrumLayout();
+  if (typeof window.loadPluginsForTab === "function") window.loadPluginsForTab(name);
   if (name === "map") {
     window.trx.map?.initAprsMap();
     window.trx.map?.sizeAprsMapToViewport();