Fix false positives from comparing struct names with different astId

[glmaljkovich]

When the storage layout is generated each Type of kind struct or array gets an astId appended to its name (i.e. t_struct(Delegation)11437_storage where the astId is 11437). As a codebase grows the astId for a given struct might change and that throws off our typeHash calculation, generating false positives.

We need to trim those astId from all types and type definitions to avoid this issue.