GDScript: Fix parsing unexpected break/continue in lambda

modules/gdscript/tests/scripts/parser/errors/bad_continue_in_lambda.gd

@@ -0,0 +1,5 @@
+func test():
+	for index in range(0, 1):
+		var lambda := func():
+			continue
+	print('not ok')

modules/gdscript/tests/scripts/parser/errors/bad_continue_in_lambda.out

@@ -0,0 +1,2 @@
+GDTEST_PARSER_ERROR
+Cannot use "continue" outside of a loop.

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

@@ -0,0 +1,13 @@
+func test():
+	var i_string := ''
+	for i in 3:
+		if i == 1: continue
+		var lambda := func():
+			var j_string := ''
+			for j in 3:
+				if j == 1: continue
+				j_string += str(j)
+			return j_string
+		i_string += lambda.call()
+	assert(i_string == '0202')
+	print('ok')

modules/gdscript/tests/scripts/parser/features/good_continue_in_lambda.out

@@ -0,0 +1,2 @@
+GDTEST_OK
+ok