bp2build: add support for soong_config_module_type.

Test: CI, go unit test
Bug: 198556411
Change-Id: Idf862904d51d822f92af0c072341c31b7a02fc64

android/testing.go

@@ -458,6 +458,7 @@ func (ctx *TestContext) Register() {
 
 // RegisterForBazelConversion prepares a test context for bp2build conversion.
 func (ctx *TestContext) RegisterForBazelConversion() {
+	ctx.SetRunningAsBp2build()
 	RegisterMutatorsForBazelConversion(ctx.Context, ctx.bp2buildPreArch, ctx.bp2buildMutators)
 }