Restore 20s UDP timeout budget on Windows CI.

Scale with active test count using factor 20 so a full matrix matches
the prior TimeUnit(200) ceiling under NUCLEAR_TEST_TIME_UNIT_DEN=10.

Co-authored-by: Cursor <cursoragent@cursor.com>

Author: TrentHouliston

tests/tests/dsl/UDP.cpp

@@ -188,7 +188,7 @@ class TestReactor : public test_util::TestBase<TestReactor> {
     TestReactor(std::unique_ptr<NUClear::Environment> environment, const std::vector<TestType>& active_tests_)
         : TestBase(std::move(environment),
                    false,
-                   test_util::TimeUnit(std::max<int64_t>(50, static_cast<int64_t>(active_tests_.size()) * 17))),
+                   test_util::TimeUnit(std::max<int64_t>(50, static_cast<int64_t>(active_tests_.size()) * 20))),
           active_tests(active_tests_) {
 
         for (const auto& t : active_tests) {