ensure lookup is for a Type narrower than the Method signature #49444
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The type_more_complex widening might result in a wider value here, based on the needs of inference, but we only care about the dispatch lookups that could have resulted in this particular Method before, not any other wider results.
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The type_more_complex widening might result in a wider value here, based on the needs of inference (in particular, due to recursion widening), but we only care about the dispatch lookups that could have resulted in this particular Method before, not any other wider results. The method-addition logic already had this type-intersection call, but it was missing here, sometimes resulting in inefficient lookups.