Fix AssertionError crash in reorder_arguments for misresolved structs

[kazzarahw]

Summary

• Replace the strict assertion in reorder_arguments with a filter that skips mismatched decl_names entries and returns args unmodified when no entry matches.
• Add a bounds check in convert_constant_types for the same scenario (IndexError on st.elems_ordered[idx]).

Root cause

reorder_arguments crashes with an AssertionError when decl_names contains entries whose length doesn't match the call argument count. This happens when Slither misresolves a struct to a same-named struct with a different number of fields (e.g. two structs named PlasmaVaultAddress in different files, one with 7 fields and one with 1).

Fixes #2217

[CLAassistant]

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