[Relax][Transform] Add SelectNode handling in SymbolicMatcher #17368
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This PR added support for handling SelectNode in the SymbolicMatcher class by modifying the VisitExpr_ function to match the true_value and false_value expressions between the current SelectNode and the other expression. If the other expression is not a SelectNode, the matching condition is updated to ensure the current SelectNode expression is equivalent to the other expression.