Dist api fingerprint file in singleton build actions

To remove our reliance on MakeVars().

Bug: 395184523
Test: Presubmits
Change-Id: If3b23375884e6e9df3cb1ae0f3d22f9c4d568de5
diff --git a/java/sdk.go b/java/sdk.go
index 4960ab5..27b2434 100644
--- a/java/sdk.go
+++ b/java/sdk.go
@@ -381,6 +381,10 @@
 	}
 
 	rule.Build("api_fingerprint", "generate api_fingerprint.txt")
+
+	if ctx.Config().BuildOS == android.Linux {
+		ctx.DistForGoals([]string{"sdk", "droidcore"}, out)
+	}
 }
 
 func sdkMakeVars(ctx android.MakeVarsContext) {
@@ -390,8 +394,4 @@
 
 	ctx.Strict("FRAMEWORK_AIDL", sdkFrameworkAidlPath(ctx).String())
 	ctx.Strict("API_FINGERPRINT", android.ApiFingerprintPath(ctx).String())
-
-	if ctx.Config().BuildOS == android.Linux {
-		ctx.DistForGoals([]string{"sdk", "droidcore"}, android.ApiFingerprintPath(ctx))
-	}
 }