find tool doesn't handle ObjectId fields correctly

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Issue

The find tool doesn't convert string values to ObjectId instances when querying MongoDB, causing queries on ID fields to return no results.

Current Behavior

• String values in filter fields are not converted to MongoDB ObjectId instances
• This affects any fields ending in "Id" or "_id" in queries
• Queries using these fields return empty results even when matching documents exist

Expected Behavior

The find tool should automatically detect and convert string values that match the ObjectId format (24-character hex) in ID fields to proper MongoDB ObjectId instances.

Suggested Solution

Add automatic conversion for string values in fields ending with "Id" or "_id" that match the ObjectId format.