repair some pipeline

Author: Jullija

src/core/CMakeLists.txt

@@ -102,6 +102,7 @@ if(NOT ${projectPrefix}API_FREESTANDING)
                include/mp-units/bits/requires_hosted.h
                include/mp-units/ext/format.h
                include/mp-units/cartesian_vector.h
+               include/mp-units/cartesian_tensor.h
                include/mp-units/format.h
                include/mp-units/math.h
                include/mp-units/ostream.h

test/runtime/cartesian_vector_test.cpp

@@ -23,14 +23,13 @@
 #include <catch2/catch_test_macros.hpp>
 #include <catch2/matchers/catch_matchers_floating_point.hpp>
 
-#ifdef MP_UNITS_MODULES
-import mp_units;
-#include <mp-units/ext/format.h>
+#if defined(MP_UNITS_MODULES)
+import mp_units.core; // brings matmul/matvec/double_contraction/outer_numeric
 #else
-#include <mp-units/cartesian_vector.h>
-#include <mp-units/ext/format.h>
-#include <sstream>
+#include <mp-units/core.h>
 #endif
+#include <mp-units/ext/format.h>
+
 
 using namespace mp_units;
 using Catch::Matchers::WithinAbs;