Incorrect transaction cache lookup result for find(Set<Id>) with composite key

[akozlovskiy]

Description:

When using a composite key consisting of multiple fields, transaction cache lookup returns incorrect results for find(Set).

Steps to Reproduce:

Within a transaction, insert multiple records where the first field of the composite key has the same value.

In the same transaction, attempt to retrieve these records using find(Set).

The method does not return the expected records.

However, if searching within the same transaction using find(Id) with all fields of the composite key fully specified, the record is correctly retrieved from the transaction cache.

Expected Behavior

find(Set) should correctly retrieve records from the transaction cache, just like find(Id).

Actual Behavior

find(Set) returns an incorrect result (missing records that were inserted earlier in the transaction).

find(Id) with a fully specified composite key correctly retrieves the record from the cache.