Rust: Add type inference test cases resembling missing call targets in SQLx.

[geoffw0]

Add type inference test cases resembling the missing call targets in SQLx. I believe this is a common pattern.

@paldepind is this one of the issues on your radar and/or can you help me come up with what a fix might look like?

[Copilot]

Pull Request Overview

This PR adds test cases for type inference in Rust, specifically focusing on missing call targets for method calls on types that implement traits through blanket implementations. The test cases model patterns similar to those found in SQLx where methods are called on connection types that implement executor traits.

• Adds a new test module exec that demonstrates trait method calls through blanket implementations
• Updates the expected test output to include type inference results for the new test cases
• Includes the new test module in the main function call chain

Reviewed Changes

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

File	Description
main.rs	Adds new exec module with trait implementation test cases and includes it in main function
type-inference.expected	Updates expected test output with type inference results for the new test cases

[paldepind]

@paldepind is this one of the issues on your radar and/or can you help me come up with what a fix might look like?

Yes! This should be covered by #20133.