LibJS: Fix "smallestUnit" property name typo in a couple of places

This is a normative change in the Temporal spec.

See: https://github.com/tc39/proposal-temporal/commit/900e4bc

Userland/Libraries/LibJS/Runtime/Temporal/DurationPrototype.cpp

@@ -359,8 +359,7 @@ JS_DEFINE_NATIVE_FUNCTION(DurationPrototype::round)
         // b. Set roundTo to ! OrdinaryObjectCreate(null).
         round_to = Object::create(global_object, nullptr);
 
-        // FIXME: "_smallestUnit_" is a spec bug, see https://github.com/tc39/proposal-temporal/pull/1931
-        // c. Perform ! CreateDataPropertyOrThrow(roundTo, "_smallestUnit_", paramString).
+        // c. Perform ! CreateDataPropertyOrThrow(roundTo, "smallestUnit", paramString).
         MUST(round_to->create_data_property_or_throw(vm.names.smallestUnit, vm.argument(0)));
     }
     // 5. Else,

Userland/Libraries/LibJS/Runtime/Temporal/InstantPrototype.cpp

@@ -265,8 +265,7 @@ JS_DEFINE_NATIVE_FUNCTION(InstantPrototype::round)
         // b. Set roundTo to ! OrdinaryObjectCreate(null).
         round_to = Object::create(global_object, nullptr);
 
-        // FIXME: "_smallestUnit_" is a spec bug, see https://github.com/tc39/proposal-temporal/pull/1931
-        // c. Perform ! CreateDataPropertyOrThrow(roundTo, "_smallestUnit_", paramString).
+        // c. Perform ! CreateDataPropertyOrThrow(roundTo, "smallestUnit", paramString).
         MUST(round_to->create_data_property_or_throw(vm.names.smallestUnit, vm.argument(0)));
     }
     // 5. Else,

Userland/Libraries/LibJS/Runtime/Temporal/PlainDateTimePrototype.cpp

@@ -641,8 +641,7 @@ JS_DEFINE_NATIVE_FUNCTION(PlainDateTimePrototype::round)
         // b. Set roundTo to ! OrdinaryObjectCreate(null).
         round_to = Object::create(global_object, nullptr);
 
-        // FIXME: "_smallestUnit_" is a spec bug, see https://github.com/tc39/proposal-temporal/pull/1931
-        // c. Perform ! CreateDataPropertyOrThrow(roundTo, "_smallestUnit_", paramString).
+        // c. Perform ! CreateDataPropertyOrThrow(roundTo, "smallestUnit", paramString).
         MUST(round_to->create_data_property_or_throw(vm.names.smallestUnit, vm.argument(0)));
     }
     // 5. Else,

Userland/Libraries/LibJS/Runtime/Temporal/PlainTimePrototype.cpp

@@ -365,8 +365,7 @@ JS_DEFINE_NATIVE_FUNCTION(PlainTimePrototype::round)
         // b. Set roundTo to ! OrdinaryObjectCreate(null).
         round_to = Object::create(global_object, nullptr);
 
-        // FIXME: "_smallestUnit_" is a spec bug, see https://github.com/tc39/proposal-temporal/pull/1931
-        // c. Perform ! CreateDataPropertyOrThrow(roundTo, "_smallestUnit_", paramString).
+        // c. Perform ! CreateDataPropertyOrThrow(roundTo, "smallestUnit", paramString).
         MUST(round_to->create_data_property_or_throw(vm.names.smallestUnit, vm.argument(0)));
     }
     // 5. Else,

Userland/Libraries/LibJS/Runtime/Temporal/ZonedDateTimePrototype.cpp

@@ -1117,8 +1117,7 @@ JS_DEFINE_NATIVE_FUNCTION(ZonedDateTimePrototype::round)
         // b. Set roundTo to ! OrdinaryObjectCreate(null).
         round_to = Object::create(global_object, nullptr);
 
-        // FIXME: "_smallestUnit_" is a spec bug, see https://github.com/tc39/proposal-temporal/pull/1931
-        // c. Perform ! CreateDataPropertyOrThrow(roundTo, "_smallestUnit_", paramString).
+        // c. Perform ! CreateDataPropertyOrThrow(roundTo, "smallestUnit", paramString).
         MUST(round_to->create_data_property_or_throw(vm.names.smallestUnit, vm.argument(0)));
     }
     // 5. Else,