Fix issue where bazel-force-enabled-modules aren't actually analyzed.

Bug: 273910287
Test: run mixed_mode_test.sh

Change-Id: I309c423b6e7f505ad1db0d9327e7de6b8298dfe9
diff --git a/android/test_config.go b/android/test_config.go
index 07ca33d..28d9ec4 100644
--- a/android/test_config.go
+++ b/android/test_config.go
@@ -65,6 +65,7 @@
 		BuildMode:                 BazelProdMode,
 		mixedBuildDisabledModules: make(map[string]struct{}),
 		mixedBuildEnabledModules:  make(map[string]struct{}),
+		bazelForceEnabledModules:  make(map[string]struct{}),
 	}
 	config.deviceConfig = &deviceConfig{
 		config: config,