Only output annotations properties in snapshots for T+

Marks the `scopeProperties.AnnotationsZip` property as only being
supported on T builds and above.

Bug: 204763318
Test: m nothing
Change-Id: Ie59396287c08da77a6a1f15d4be202429e011e17
diff --git a/java/sdk_library.go b/java/sdk_library.go
index 98f2999..6a2a7a8 100644
--- a/java/sdk_library.go
+++ b/java/sdk_library.go
@@ -2808,7 +2808,7 @@
 	StubsSrcJar    android.Path
 	CurrentApiFile android.Path
 	RemovedApiFile android.Path
-	AnnotationsZip android.Path
+	AnnotationsZip android.Path `supported_build_releases:"T+"`
 	SdkVersion     string
 }