fix(connection): use correct collection name for model when using useConnection()

[vkarpov15]

Fix #15629

Summary

useConnection() hard-codes the model name as the model's collection name, which works in tests but isn't correct in general. Should copy the same collection name from the original model's collection.

Examples

[Copilot]

Pull Request Overview

This PR fixes an issue where useConnection() was incorrectly using the model name as the collection name instead of the actual collection name. The fix ensures that when a model uses a different connection, it preserves the original collection name rather than defaulting to the model name.

• Updated useConnection() to use the original model's collection name instead of the model name
• Added test coverage to verify the collection name is preserved correctly

Reviewed Changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated no comments.

File	Description
lib/model.js	Fixed useConnection() to use this.collection.collectionName instead of this.modelName
test/model.test.js	Added test case with explicit collection name and assertion to verify correct collection name usage

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