Disable automatic switching to guest.

Disabling by default until outstanding issues are resolved.

Bug: 117601534
Bug: 118756966
Bug: 117489199
Test: previously tested that using negative values in configuration disables switching to guest
Change-Id: I2e3552d4cdde0afb554dca0d6caf14de5e3efe3c
diff --git a/packages/CarSystemUI/res/values/integers_car.xml b/packages/CarSystemUI/res/values/integers_car.xml
index 777283d..be2cb0d 100644
--- a/packages/CarSystemUI/res/values/integers_car.xml
+++ b/packages/CarSystemUI/res/values/integers_car.xml
@@ -23,7 +23,7 @@
     <!-- Number of milliseconds user can spend driving with the keyguard up. After that, we switch to Guest. -->
     <!-- If the number is negative, the feature is disabled.
          If it's zero, we switch to guest immediately as we start driving. -->
-    <integer name="driving_on_keyguard_timeout_ms">30000</integer>
+    <integer name="driving_on_keyguard_timeout_ms">-1</integer>
 
     <!--Percentage of the screen height, from the bottom, that a notification panel being
     partially closed at will result in it remaining open if released-->