doclava: include "Added in API <version>" in offline docs

Pass -metalavaApiSince to doclava when generating offline docs. This
will make the output include the "Added in API <version>" next to each
symbol, just like the online docs at DAC.

Bug: 259632341
Test: m docs # manually inspect out/target/common/docs/offline-sdk-docs-docs.zip
Change-Id: I4a6fd211ca535040d53312131df0d214d1785a0b
diff --git a/ApiDocs.bp b/ApiDocs.bp
index bf3a6a3..a46ecce 100644
--- a/ApiDocs.bp
+++ b/ApiDocs.bp
@@ -183,6 +183,7 @@
 /////////////////////////////////////////////////////////////////////
 
 framework_docs_only_args = " -android -manifest $(location core/res/AndroidManifest.xml) " +
+    "-metalavaApiSince " +
     "-werror -lerror -hide 111 -hide 113 -hide 125 -hide 126 -hide 127 -hide 128 " +
     "-overview $(location core/java/overview.html) " +
     // Federate Support Library references against local API file.
@@ -374,7 +375,7 @@
     ],
     proofread_file: "ds-docs-proofread.txt",
     args: framework_docs_only_args +
-        " -toroot / -yamlV2 -metalavaApiSince -samplegroup Admin " +
+        " -toroot / -yamlV2 -samplegroup Admin " +
         " -samplegroup Background " +
         " -samplegroup Connectivity " +
         " -samplegroup Content " +