GDScript: Improve call analysis

* Add missing `UNSAFE_CALL_ARGUMENT` warning.
* Fix `Object` constructor.
* Display an error for non-existent static methods.

modules/gdscript/tests/scripts/parser/features/dollar_and_percent_get_node.gd

@@ -3,27 +3,32 @@ extends Node
 func test():
 	var child = Node.new()
 	child.name = "Child"
+	@warning_ignore("unsafe_call_argument")
 	add_child(child)
 	child.owner = self
 
 	var hey = Node.new()
 	hey.name = "Hey"
+	@warning_ignore("unsafe_call_argument")
 	child.add_child(hey)
 	hey.owner = self
 	hey.unique_name_in_owner = true
 
 	var fake_hey = Node.new()
 	fake_hey.name = "Hey"
+	@warning_ignore("unsafe_call_argument")
 	add_child(fake_hey)
 	fake_hey.owner = self
 
 	var sub_child = Node.new()
 	sub_child.name = "SubChild"
+	@warning_ignore("unsafe_call_argument")
 	hey.add_child(sub_child)
 	sub_child.owner = self
 
 	var howdy = Node.new()
 	howdy.name = "Howdy"
+	@warning_ignore("unsafe_call_argument")
 	sub_child.add_child(howdy)
 	howdy.owner = self
 	howdy.unique_name_in_owner = true

modules/gdscript/tests/scripts/parser/features/dollar_node_paths.gd

@@ -5,9 +5,11 @@ func test():
 	# Create the required node structure.
 	var hello = Node.new()
 	hello.name = "Hello"
+	@warning_ignore("unsafe_call_argument")
 	add_child(hello)
 	var world = Node.new()
 	world.name = "World"
+	@warning_ignore("unsafe_call_argument")
 	hello.add_child(world)
 
 	# All the ways of writing node paths below with the `$` operator are valid.

modules/gdscript/tests/scripts/parser/features/lambda_ends_with_new_line.gd

@@ -26,6 +26,7 @@ func test():
     if true: (v as Callable).call()
     print()
 
+    @warning_ignore("unsafe_call_argument")
     other(v)
     print()
 

modules/gdscript/tests/scripts/parser/features/nested_function_calls.gd

@@ -2,4 +2,5 @@ func foo(x):
 	return x + 1
 
 func test():
+	@warning_ignore("unsafe_call_argument")
 	print(foo(foo(foo(foo(foo(foo(foo(foo(foo(foo(foo(foo(foo(foo(foo(foo(foo(foo(foo(foo(foo(foo(foo(foo(0)))))))))))))))))))))))))

modules/gdscript/tests/scripts/parser/features/super.gd

@@ -36,6 +36,7 @@ class SayNothing extends Say:
 		print("howdy, see above")
 
 	func say(name):
+		@warning_ignore("unsafe_call_argument")
 		super(name + " super'd")
 		print(prefix, " say nothing... or not? ", name)
 

modules/gdscript/tests/scripts/parser/features/unicode_identifiers.gd

@@ -29,6 +29,7 @@ func test():
 
 	const d = 1.1
 	_process(d)
+	@warning_ignore("unsafe_call_argument")
 	print(is_equal_approx(ㄥ, PI + (d * PI)))
 
 func _process(Δ: float) -> void: