[libc++] tests with picolibc: mark two more large tests

Author: domin144

libcxx/test/std/re/re.alg/re.alg.match/exponential.pass.cpp

@@ -10,6 +10,9 @@
 // UNSUPPORTED: no-exceptions
 // UNSUPPORTED: c++03
 
+// fails with bad_alloc exception
+// REQUIRES: large_tests
+
 // template <class BidirectionalIterator, class Allocator, class charT, class traits>
 //     bool
 //     regex_match(BidirectionalIterator first, BidirectionalIterator last,

libcxx/test/std/re/re.alg/re.alg.search/exponential.pass.cpp

@@ -10,6 +10,9 @@
 // UNSUPPORTED: no-exceptions
 // UNSUPPORTED: c++03
 
+// fails with bad_alloc exception
+// REQUIRES: large_tests
+
 // template <class BidirectionalIterator, class Allocator, class charT, class traits>
 //     bool
 //     regex_search(BidirectionalIterator first, BidirectionalIterator last,