Fix(?) for some disabled ChooserActivityTest cases

These tests (testShortcutTarget{With,Without}ApplyAppLimits) are
currently disabled by @Ignore annotations, and I'm not re-enabling
them in this CL because I'm not sure that they won't flake -- I
just know that this was an easy (and understandable) fix when I
tried to run these tests locally, and I'd like to preserve that
fix for posterity.

Test: Re-enabled the tests and confirmed they passed only w/ fix
Bug: 208803748
Change-Id: I5268e3324d3cec9f6a72aee5de9ec1f06e45e987

core/tests/coretests/src/com/android/internal/app/ChooserActivityTest.java

@@ -3073,8 +3073,15 @@ public class ChooserActivityTest {
     // framework code on the device is up-to-date.
     // TODO: is there a better way to do this? (Other than abandoning inheritance-based DI wrapper?)
     private int getRuntimeResourceId(String name, String defType) {
-        int id = mActivityRule.getActivity().getResources().getIdentifier(name, defType, "android");
+        int id = -1;
+        if (ChooserActivityOverrideData.getInstance().resources != null) {
+            id = ChooserActivityOverrideData.getInstance().resources.getIdentifier(
+                  name, defType, "android");
+        } else {
+            id = mActivityRule.getActivity().getResources().getIdentifier(name, defType, "android");
+        }
         assertThat(id, greaterThan(0));
+
         return id;
     }
 }