rust: Add SCS sanitizer option for AArch64

SCS has been supported in Rust since 1.64.0.

This adds SCS as a sanitizer option in Rust.

Bug: 168914033
Test: Built module with sanitize: { scs: true }
Change-Id: Ie54ac4693286878b98704cf052649a267777d764
diff --git a/cc/vendor_snapshot.go b/cc/vendor_snapshot.go
index 9ea337b..2421e24 100644
--- a/cc/vendor_snapshot.go
+++ b/cc/vendor_snapshot.go
@@ -95,7 +95,7 @@
 		if sanitizable.SanitizePropDefined() {
 			// scs exports both sanitized and unsanitized variants for static and header
 			// Always use unsanitized variant of it.
-			if !sanitizable.Shared() && sanitizable.IsSanitizerEnabled(scs) {
+			if !sanitizable.Shared() && sanitizable.IsSanitizerEnabled(Scs) {
 				return false
 			}
 			// cfi and hwasan also export both variants. But for static, we capture both.