[Clang-tidy] fix warning in copy_to_sycl_buffer function (#1422)

warning: 'equals<int>' is deprecated: Use equals(const
sham::DeviceScheduler_ptr &, sham::DeviceBuffer<T> &,
sham::DeviceBuffer<T> &, u32 ) instead.
[clang-diagnostic-deprecated-declarations]
  280 |         return equals(q, buf1, buf2, buf1.size());
      |                ^

/__w/Shamrock/Shamrock/src/tests/shambackends/DeviceBufferTests.cpp:120:35:
note: in instantiation of function template specialization
'shamalgs::primitives::equals<int>' requested here
  120 |     REQUIRE(shamalgs::primitives::equals(q, b1, b2));
      |                                   ^

/__w/Shamrock/Shamrock/src/shamalgs/include/shamalgs/primitives/equals.hpp:74:7:
note: 'equals<int>' has been explicitly marked deprecated here
   74 |     [[deprecated(
      |       ^

---------

Co-authored-by: David--Cléris Timothée <timothee.davidcleris@proton.me>

Author: Akos299

src/tests/shambackends/DeviceBufferTests.cpp

@@ -117,7 +117,13 @@ TestStart(
     REQUIRE_EQUAL(b1.size(), b2.size());
     REQUIRE_EQUAL(b.get_size(), b1.size());
 
-    REQUIRE(shamalgs::primitives::equals(q, b1, b2));
+    if (b1.size() == b2.size() && b.get_size() == b1.size()) {
+        sycl::host_accessor acc1(b1, sycl::read_only);
+        sycl::host_accessor acc2(b2, sycl::read_only);
+        for (size_t i = 0; i < b1.size(); ++i) {
+            REQUIRE_EQUAL(acc1[i], acc2[i]);
+        }
+    }
 }
 
 TestStart(Unittest, "shambackends/DeviceBuffer:fill", DeviceBuffer_fill1, 1) {