Fix settingCount mismatch and mark MOK Fitness S10 Ultra as no ERG mode

settings-catalog.json settingCount was 964 but 965 entries exist after
the Freebeat and WaterRower USB settings were both merged. Also flag
MOK Fitness S10 Ultra (MOKFITNESS-) as not supporting ERG mode natively,
consistent with other resistance-based FTMS bikes.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

Author: cagnulein

src/devices/ftmsbike/ftmsbike.cpp

@@ -2156,6 +2156,7 @@ void ftmsbike::deviceDiscovered(const QBluetoothDeviceInfo &device) {
             qDebug() << QStringLiteral("MOKFITNESS found");
             MOK_FITNESS = true;
             max_resistance = 32;
+            ergModeSupported = false; // this bike doesn't have ERG mode natively
         } else if (isSmartBikeThreeDigitName(device.name())) {
             qDebug() << QStringLiteral("SMARTBIKE-### found");
             SMARTBIKE_3DIGIT = true;

src/settings-catalog.json

@@ -2,7 +2,7 @@
   "$schema": "https://qdomyos-zwift.local/settings-catalog.schema.json",
   "schemaVersion": 1,
   "format": "qdomyos-zwift-settings-catalog",
-  "settingCount": 964,
+  "settingCount": 965,
   "pages": [
     {
       "key": "page_custom_gear_table",