LibWeb: Ensure all passed arguments are used when parsing math functions

This disallows things such as `log(1, foobar)` where we would previously
just skip over `foobar` and parse this as `log(1)`

Author: Calme1709

Meta/Lagom/Tools/CodeGenerators/LibWeb/GenerateCSSMathFunctions.cpp

@@ -417,6 +417,10 @@ RefPtr<CalculationNode const> Parser::parse_math_function(Function const& functi
                 parameter_index++;
             });
 
+            function_generator.append(R"~~~(
+        if (argument_index < arguments.size())
+            return nullptr;
+)~~~");
             // Generate the call to the constructor
             function_generator.append("        return @name:titlecase@CalculationNode::create("sv);
             parameter_index = 0;

Tests/LibWeb/Text/expected/wpt-import/css/css-values/exp-log-invalid.txt

@@ -2,8 +2,7 @@ Harness status: OK
 
 Found 48 tests
 
-46 Pass
-2 Fail
+48 Pass
 Pass	e.style['opacity'] = "exp()" should not set the property value
 Pass	e.style['opacity'] = "exp( )" should not set the property value
 Pass	e.style['opacity'] = "exp(,)" should not set the property value
@@ -18,7 +17,7 @@ Pass	e.style['opacity'] = "exp(1, , 2)" should not set the property value
 Pass	e.style['opacity'] = "log()" should not set the property value
 Pass	e.style['opacity'] = "log( )" should not set the property value
 Pass	e.style['opacity'] = "log(,)" should not set the property value
-Fail	e.style['opacity'] = "log(1, )" should not set the property value
+Pass	e.style['opacity'] = "log(1, )" should not set the property value
 Pass	e.style['opacity'] = "log(, 1)" should not set the property value
 Pass	e.style['opacity'] = "log(1 + )" should not set the property value
 Pass	e.style['opacity'] = "log(1 - )" should not set the property value
@@ -51,4 +50,4 @@ Pass	e.style['opacity'] = "log(1, 0s)" should not set the property value
 Pass	e.style['opacity'] = "log(1, 0deg)" should not set the property value
 Pass	e.style['opacity'] = "log(1, 0Hz)" should not set the property value
 Pass	e.style['opacity'] = "log(1, 0dpi)" should not set the property value
-Fail	e.style['opacity'] = "log(1, 0fr)" should not set the property value
+Pass	e.style['opacity'] = "log(1, 0fr)" should not set the property value