Disable source apex variant using apex_available_name

There are two versions of aosp extservices - one for Tplus and one for
Sminus. When prebuilts are active, the `contents` validation of both
variants of extservices bootclasspath fragments should be disabled to
account for BCP jar skew.

This CL adds ApexAvailableName to ApexInfo to achive that. If an
api_domain matching the ApexAvailableName has been selected in
`all_apex_contributions`, the source apex variants will be disabled.

Bug: 361771739

Test: lunch cf_x86_64_phone-next-userdebug
Test: m nothing with ag/28851886
Change-Id: I505a7ad8295c258e2eeef7f183669f7a75a1c88e
diff --git a/java/dexpreopt.go b/java/dexpreopt.go
index f949b12..b55ef73 100644
--- a/java/dexpreopt.go
+++ b/java/dexpreopt.go
@@ -209,13 +209,18 @@
 			psi = prebuiltSelectionInfo
 		}
 	})
+
 	// Find the apex variant for this module
-	var apexVariantsWithoutTestApexes []string
+	apexVariantsWithoutTestApexes := []string{}
 	if apexInfo.BaseApexName != "" {
 		// This is a transitive dependency of an override_apex
-		apexVariantsWithoutTestApexes = []string{apexInfo.BaseApexName}
+		apexVariantsWithoutTestApexes = append(apexVariantsWithoutTestApexes, apexInfo.BaseApexName)
 	} else {
-		_, apexVariantsWithoutTestApexes, _ = android.ListSetDifference(apexInfo.InApexVariants, apexInfo.TestApexes)
+		_, variants, _ := android.ListSetDifference(apexInfo.InApexVariants, apexInfo.TestApexes)
+		apexVariantsWithoutTestApexes = append(apexVariantsWithoutTestApexes, variants...)
+	}
+	if apexInfo.ApexAvailableName != "" {
+		apexVariantsWithoutTestApexes = append(apexVariantsWithoutTestApexes, apexInfo.ApexAvailableName)
 	}
 	disableSource := false
 	// find the selected apexes