Stop java_sdk_library_import from depending on source modules

Previously, java_sdk_library_import added the dependencies on its child
components in the deps mutator after prebuilts without a matching
source module are renamed to the source module name. That meant that
the java_sdk_library_import has to use the source module name and ended
up depending on the source module unless it was preferred.

This change adds a new component deps mutator that runs before the
PrebuiltRenameMutator so that the java_sdk_library_import can add
dependencies onto the prebuilt modules. It also updates an affected
test.

Bug: 159902351
Test: m nothing
Change-Id: I3576c4873302743e51aff547ea1497bef6d748ac
diff --git a/sdk/testing.go b/sdk/testing.go
index 4361754..40abdcd 100644
--- a/sdk/testing.go
+++ b/sdk/testing.go
@@ -84,6 +84,7 @@
 	android.RegisterPackageBuildComponents(ctx)
 	ctx.PreArchMutators(android.RegisterVisibilityRuleChecker)
 	ctx.PreArchMutators(android.RegisterDefaultsPreArchMutators)
+	ctx.PreArchMutators(android.RegisterComponentsMutator)
 	ctx.PreArchMutators(android.RegisterVisibilityRuleGatherer)
 	ctx.PostDepsMutators(android.RegisterVisibilityRuleEnforcer)