CMake: Fix abseil_dll target name when using find_package(absl)

cmake/abseil-cpp.cmake

@@ -39,9 +39,19 @@ set(_protobuf_FIND_ABSL "if(NOT TARGET absl::strings)\n  find_package(absl CONFI
 
 if (BUILD_SHARED_LIBS AND MSVC)
   # On MSVC Abseil is bundled into a single DLL.
-  set(protobuf_ABSL_USED_TARGETS abseil_dll)
-
-  set(protobuf_ABSL_USED_TEST_TARGETS abseil_test_dll)
+  # This condition is necessary as of abseil 20230125.3 when abseil is consumed via add_subdirectory,
+  # the abseil_dll target  is named abseil_dll, while if abseil is consumed via find_package, the target
+  # is called absl::abseil_dll
+  # Once https://github.com/abseil/abseil-cpp/pull/1466 is merged and released in the minimum version of 
+  # abseil required by protobuf, it is possible to always link absl::abseil_dll and absl::abseil_test_dll
+  # and remove the if
+  if(protobuf_ABSL_PROVIDER STREQUAL "package")
+    set(protobuf_ABSL_USED_TARGETS absl::abseil_dll)
+    set(protobuf_ABSL_USED_TEST_TARGETS absl::abseil_test_dll)
+  else()
+    set(protobuf_ABSL_USED_TARGETS abseil_dll)
+    set(protobuf_ABSL_USED_TEST_TARGETS abseil_test_dll)
+  endif()
 else()
   set(protobuf_ABSL_USED_TARGETS
     absl::absl_check