Reland "fdsan: make fatal by default."

The two tests known to be failing (installd_dexopt_test and BpfMapTest)
have been fixed, so let's try this again.

This reverts commit 76351e3e3fbbd386c059251dbc6b1081a8f77088.

Bug: http://b/137788030
Bug: http://b/139092341
Bug: http://b/139175951
Test: treehugger
diff --git a/linker/linker_sdk_versions.cpp b/linker/linker_sdk_versions.cpp
index b06f3e6..29c0f4a 100644
--- a/linker/linker_sdk_versions.cpp
+++ b/linker/linker_sdk_versions.cpp
@@ -26,10 +26,13 @@
  * SUCH DAMAGE.
  */
 
-#include "linker.h"
-#include <android/api-level.h>
 #include <atomic>
 
+#include <android/api-level.h>
+#include <android/fdsan.h>
+
+#include "linker.h"
+
 static std::atomic<int> g_target_sdk_version(__ANDROID_API__);
 
 void set_application_target_sdk_version(int target) {
@@ -38,6 +41,10 @@
     target = __ANDROID_API__;
   }
   g_target_sdk_version = target;
+
+  if (target < 30) {
+    android_fdsan_set_error_level_from_property(ANDROID_FDSAN_ERROR_LEVEL_WARN_ONCE);
+  }
 }
 
 int get_application_target_sdk_version() {