apex.use_vndk_as_stable can't be used with min_sdk_version

For vendor apexes, use_vndk_as_stable: true means the apex is tied with
the current VNDK version while min_sdk_version: N means the apex should
work with N+ VNDK versions. Setting both properties together doesn't
make sense.

Bug: 274396342
Test: m nothing (soong tests)
Change-Id: I00dcac43f95ce6a90b3f3273ae4611a300ea5028

apex/apex.go

@@ -993,6 +993,9 @@ func (a *apexBundle) ApexInfoMutator(mctx android.TopDownMutatorContext) {
 		if !useVndk {
 			mctx.PropertyErrorf("use_vndk_as_stable", "not supported for system/system_ext APEXes")
 		}
+		if a.minSdkVersionValue(mctx) != "" {
+			mctx.PropertyErrorf("use_vndk_as_stable", "not supported when min_sdk_version is set")
+		}
 		mctx.VisitDirectDepsWithTag(sharedLibTag, func(dep android.Module) {
 			if c, ok := dep.(*cc.Module); ok && c.IsVndk() {
 				mctx.PropertyErrorf("use_vndk_as_stable", "Trying to include a VNDK library(%s) while use_vndk_as_stable is true.", dep.Name())