fix: correct StructureType comparator to compare s1 vs s2

[shuibui]

Summary

Fix the StructureType comparator in DefaultComparators.java to correctly compare s1 vs s2 instead of comparing s2 against itself.

Bug

// Before (incorrect - compared s2 to itself)
return Relation.get(CollectionUtils.containsAll(s2.getTypes(), s2.getTypes()));

// After (correct - compares s1 to s2)
return Relation.get(CollectionUtils.containsAll(s1.getTypes(), s2.getTypes()));

Issue

Fixes #8638

Testing

The bug was identifiable from source inspection. The fix ensures the comparator correctly checks if s1's types contain all of s2's types, not both arguments being s2.

[erenkarakal]

This is already resolved in #8640
Closing