suppress cppcheck mismatchingContainerExpression false positive on ranges::unique in virtual_tree

Author: Cameron Custer

tests/.config/.cppcheck_suppression_list

@@ -60,5 +60,6 @@ unusedFunction:../kactl/content/data-structures/UnionFind.h:14
 unusedFunction:../kactl/content/number-theory/ModPow.h:13
 unusedFunction:../kactl/stress-tests/utilities/genTree.h:49
 containerOutOfBounds:../library/data_structures_[l,r)/uncommon/permutation_tree.hpp:85
+mismatchingContainerExpression:../library/trees/extra_members/virtual_tree.hpp:19
 ctuOneDefinitionRuleViolation:../library/data_structures_[l,r)/bit.hpp:15
 ctuOneDefinitionRuleViolation:../library/data_structures_[l,r)/lazy_seg_tree.hpp:4