Bypass boost::numeric_cast checks for coordinate values that have already been validated (#4059)

(i.e. stuff that's stored in our datafiles).  Keep those checks for user-supplied values
(i.e. coordinates coming from files during preprocessing, or coordinates supplied by users
 during requests)

unit_tests/util/coordinate_calculation.cpp

@@ -125,14 +125,17 @@ BOOST_AUTO_TEST_CASE(compute_angle)
     end = Coordinate{FloatLongitude{1 + std::numeric_limits<double>::epsilon()}, FloatLatitude{0}};
     angle = coordinate_calculation::computeAngle(first, middle, end);
     BOOST_CHECK_EQUAL(angle, 180);
+}
 
-    // Invalid values
-    BOOST_CHECK_THROW(
-        coordinate_calculation::computeAngle(
-            Coordinate(FloatLongitude{0}, FloatLatitude{0}),
-            Coordinate(FloatLongitude{1}, FloatLatitude{0}),
-            Coordinate(FloatLongitude{std::numeric_limits<double>::max()}, FloatLatitude{0})),
-        boost::numeric::positive_overflow);
+BOOST_AUTO_TEST_CASE(invalid_values)
+{
+    // Invalid values for unsafe types
+    BOOST_CHECK_THROW(coordinate_calculation::computeAngle(
+                          Coordinate(UnsafeFloatLongitude{0}, UnsafeFloatLatitude{0}),
+                          Coordinate(UnsafeFloatLongitude{1}, UnsafeFloatLatitude{0}),
+                          Coordinate(UnsafeFloatLongitude{std::numeric_limits<double>::max()},
+                                     UnsafeFloatLatitude{0})),
+                      boost::numeric::positive_overflow);
 }
 
 // Regression test for bug captured in #1347