Fix duplicate dynamic properties in hooked object iterator properties table

Ouch, Z_TRY_ADDREF_P() uses pz twice... Also make sure we actually reserve
enough Buckets for all dynamic prop

Fix duplicate dynamic properties in hooked object iterator properties table

Ouch, Z_TRY_ADDREF_P() uses pz twice... Also make sure we actually reserve
enough Buckets for all dynamic properties.

Fixes OSS-Fuzz #382922236
Closes GH-17085

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