[feat](trx-frontend): reset signal split on slider double-click

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

@@ -2151,6 +2151,14 @@ if (signalSplitSliderEl) {
     saveSetting("signalSplitPercent", signalSplitPercent);
     scheduleSpectrumLayout();
   });
+  signalSplitSliderEl.addEventListener("dblclick", (event) => {
+    event.preventDefault();
+    signalSplitPercent = DEFAULT_SIGNAL_SPLIT_PERCENT;
+    signalSplitSliderEl.value = String(signalSplitPercent);
+    updateSignalSplitControlText();
+    saveSetting("signalSplitPercent", signalSplitPercent);
+    scheduleSpectrumLayout();
+  });
 }
 updateSignalSplitControlText();