Don't link the framework impl in docs build

This gives the docs build access to hidden symbols, which hides issues
in the documentation.

Baseline the newly discovered issues.

Bug: 217734059
Test: m docs
Merged-In: I357f5a341a170a37152d836861a330039a83886c
Change-Id: I357f5a341a170a37152d836861a330039a83886c
diff --git a/api/ApiDocs.bp b/api/ApiDocs.bp
index 6461c00..8d8fc12 100644
--- a/api/ApiDocs.bp
+++ b/api/ApiDocs.bp
@@ -195,6 +195,8 @@
 
 doc_defaults {
     name: "framework-docs-default",
+    sdk_version: "none",
+    system_modules: "none",
     libs: framework_docs_only_libs + [
         "stub-annotations",
         "unsupportedappusage",