Edge case in `clippy::multiple_unsafe_ops_per_block`

Summary

The following example identified by @Jarcho in the discussion of #16079 triggers the lint while it probably shouldn't:

#![warn(clippy::multiple_unsafe_ops_per_block)]

union U {
    i: u32,
}

#[clippy::msrv = "1.91"]
fn main() {
    let u = U { i: 0 };
    let pu = &raw const u;
    // The lint should probably not trigger here as we can't break apart the expression
    unsafe {
        _ = (*pu).i;
    }
}

Reproducer

No response

Version

Rust nightly-2025-10-31

Additional Labels

No response

Start with the supplied Rust nightly reproducer and inspect the implementation and tests for the clippy::multiple_unsafe_ops_per_block lint. Determine why the union field access is counted as multiple unsafe operations. Done means this example no longer triggers the lint while existing lint behavior remains covered by tests.