tarantool: enable UBSan for Lua tests

Follows up tarantool/tarantool#12216

Author: ligurio

projects/tarantool/build.sh

@@ -117,12 +117,9 @@ done
 
 # Finish execution if libFuzzer is not used, because luzer
 # is libFuzzer-based.
-# UndefinedBehaviorSanitizer is not supported,
-# see https://github.com/tarantool/tarantool/issues/12216.
 # Code coverage is not supported,
 # see https://github.com/google/oss-fuzz/issues/14859.
 if [[ "$FUZZING_ENGINE" != libfuzzer ]] ||
-   [[ "$SANITIZER" == "undefined" ]] ||
    [[ "$SANITIZER" == "coverage" ]]; then
   exit
 fi