Fix 1-variant fallback issue in aconfig_test.go

This was missed earlier because it was not setup to run on an
m nothing --no-skip-soong-tests

Bug: 372091092
Test: m nothing --no-skip-soong-tests with aosp/3318965
Change-Id: I0f0c0ed2dbe4546aef954198ef63603ed3e3af8a
diff --git a/apex/Android.bp b/apex/Android.bp
index 4848513..0e2f564 100644
--- a/apex/Android.bp
+++ b/apex/Android.bp
@@ -33,6 +33,7 @@
         "vndk.go",
     ],
     testSrcs: [
+        "aconfig_test.go",
         "apex_test.go",
         "bootclasspath_fragment_test.go",
         "classpath_element_test.go",
diff --git a/apex/aconfig_test.go b/apex/aconfig_test.go
index 2ab61b3..76227a9 100644
--- a/apex/aconfig_test.go
+++ b/apex/aconfig_test.go
@@ -682,7 +682,7 @@
 				}
 				filegroup {
 						name: "my_filegroup_foo_srcjars",
-						srcs: [
+						device_common_srcs: [
 								":my_aconfig_declarations_group_foo{.srcjars}",
 						],
 				}