Fix GeographicLib linking - remove invalid TARGET_LINK_DIRECTORIES calls

- TARGET_LINK_DIRECTORIES is not a standard CMake command
- Rely on  full path for linking
- Applied to LtsCoordTrans library, tools, and test executable

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

qt6-after/qt6-migrated-legatus/Lts/Common/LtsCoordTrans/CMakeLists.txt

@@ -27,7 +27,6 @@ if (GeographicLib_FOUND)
     PRIVATE ${GeographicLib_LIBRARIES}
   )
   TARGET_INCLUDE_DIRECTORIES(LtsCoordTrans PRIVATE ${GeographicLib_INCLUDE_DIRS})
-  TARGET_LINK_DIRECTORIES(LtsCoordTrans PRIVATE ${GeographicLib_LIBRARY_DIRS})
 else()
   message(STATUS "GeographicLib not found; building LtsCoordTrans without it")
 endif()
@@ -73,7 +72,6 @@ IF(TARGET LtsCoordTrans)
       ${GeographicLib_LIBRARIES}
     )
     TARGET_INCLUDE_DIRECTORIES(${_tool} PRIVATE ${GeographicLib_INCLUDE_DIRS})
-    TARGET_LINK_DIRECTORIES(${_tool} PRIVATE ${GeographicLib_LIBRARY_DIRS})
     NGL_INSTALL_TARGET(${_tool})
   ENDFOREACH()
 ENDIF()
@@ -97,8 +95,5 @@ IF(BUILD_TESTING AND TARGET LtsCoordTrans)
     ${GeographicLib_LIBRARIES}
   )
   TARGET_INCLUDE_DIRECTORIES(lts_coord_trans_unit_test PRIVATE ${GeographicLib_INCLUDE_DIRS})
-  if (GeographicLib_FOUND)
-    TARGET_LINK_DIRECTORIES(lts_coord_trans_unit_test PRIVATE ${GeographicLib_LIBRARY_DIRS})
-  endif()
   ADD_TEST(NAME lts_coord_trans_unit_test COMMAND $<TARGET_FILE:lts_coord_trans_unit_test>)
 ENDIF()