Rename SupplementalProcess to SdkSandbox

Ignore-AOSP-First: sepolicy is not in aosp, yet
Bug: 220320098
Test: presubmit
Change-Id: I9fb98e0caee75bdaaa35d11d174004505f236799
diff --git a/private/mac_permissions.xml b/private/mac_permissions.xml
index 0e77637..ec3df0f 100644
--- a/private/mac_permissions.xml
+++ b/private/mac_permissions.xml
@@ -51,9 +51,9 @@
       <seinfo value="platform" />
     </signer>
 
-    <!-- Supplemental process key -->
-    <signer signature="@SUPPLEMENTAL_PROCESS" >
-      <seinfo value="supplemental_process" />
+    <!-- Sdk Sandbox key -->
+    <signer signature="@SDK_SANDBOX" >
+      <seinfo value="sdk_sandbox" />
     </signer>
 
     <!-- Media key in AOSP -->