[Copilot]

Rust 1.97 introduced the clippy::useless_borrows_in_formatting lint, which is promoted to an error via -D warnings in CI. This broke the lint job across multiple files that used redundant & references in write! macro arguments.

Changes

• examples/azure_auth/entity/ — Remove redundant & from write! args in comment.rs and post.rs
• examples/basic/entity/ — Same fix in comment.rs and user.rs
• tests/test_setup/ — Same fix in comment.rs, post.rs, and sample_with_tenant_id.rs

// Before
_ => write!(formatter, "{} {}", &self.insert_date, &self.user),

// After
_ => write!(formatter, "{} {}", self.insert_date, self.user),