Make tests fail if ASan finds an errors (#10005)

The AddressSanitizer also loads the LeakSanitizer flags and even though
the documentation suggests that exitcode can be set per sanitizer, this
doesn't appear to be the case and our tests exit with code 0 after the
AddressSanitizer found a problem. After this change, around 100 tests
will fail due to several issues.

core/sanitizer/SanitizerSetup.cxx

@@ -36,7 +36,7 @@ const char* __asan_default_options() {
 /// These can be overridden / augmented by the LSAN_OPTIONS environment variable.
 /// Using LSAN_OPTIONS=help=1 and starting an instrumented ROOT exectuable, available options will be printed.
 const char* __lsan_default_options() {
-   return "exitcode=0:max_leaks=10:print_suppressions=1";
+   return "max_leaks=10:print_suppressions=1";
 }
 
 /// Default suppressions for leak sanitizer in ROOT.