fix(lite): ignore a click on the already-connected server

Clicking the Network-tab card of the server the wallet was already
pinned to and connected to tore the controller down and reopened the
wallet against the same server. That click is now a no-op. A wallet that
failed over to another server still reconnects, which retries the pinned
one.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

src/ui/windows/network_tab.cpp

@@ -10,6 +10,7 @@
 #include "../../util/i18n.h"
 #include "../../util/lite_server_probe.h"
 #include "../../wallet/lite_connection_service.h"
+#include "../../wallet/lite_wallet_controller.h"
 #include "../theme.h"
 #include "../layout.h"
 #include "../material/type.h"
@@ -72,6 +73,11 @@ void RenderLiteNetworkTab(App* app)
 
     auto applyAndRebuild = [&]() { st->save(); app->rebuildLiteWallet(/*force=*/true); };
     auto pinServer = [&](const std::string& url) {
+        // Already pinned AND connected to exactly this server: nothing to switch (the click used to tear the
+        // controller down and reopen). A wallet that failed over to another server still reconnects, which
+        // retries the pinned one.
+        auto* lite = app->liteWallet();
+        if (!randomMode && url == sticky && lite && lite->walletOpen() && lite->connectedServerUrl() == url) return;
         st->setLiteServerSelectionMode(LiteMode::Sticky);
         st->setLiteStickyServerUrl(url);
         applyAndRebuild();