Make shell-transit flag public

So it can be accessed by tests in other packages

Bug: 238328090
Test: N/A just increasing visibility
Change-Id: I5c270e1bdd315010c169d4cfcd82e3cce6d12442
diff --git a/quickstep/tests/src/com/android/quickstep/AbstractQuickStepTest.java b/quickstep/tests/src/com/android/quickstep/AbstractQuickStepTest.java
index 09f0858..f190e27 100644
--- a/quickstep/tests/src/com/android/quickstep/AbstractQuickStepTest.java
+++ b/quickstep/tests/src/com/android/quickstep/AbstractQuickStepTest.java
@@ -35,7 +35,7 @@
  * Base class for all instrumentation tests that deal with Quickstep.
  */
 public abstract class AbstractQuickStepTest extends AbstractLauncherUiTest {
-    static final boolean ENABLE_SHELL_TRANSITIONS =
+    public static final boolean ENABLE_SHELL_TRANSITIONS =
             SystemProperties.getBoolean("persist.wm.debug.shell_transit", false);
     @Override
     protected TestRule getRulesInsideActivityMonitor() {