Enable clippy::bool_comparison (#8769)

This PR enables the
[`clippy::bool_comparison`](https://rust-lang.github.io/rust-clippy/master/index.html#/bool_comparison)
rule and fixes the outstanding violations.

Release Notes:

- N/A

tooling/xtask/src/main.rs

@@ -80,7 +80,6 @@ fn run_clippy(args: ClippyArgs) -> Result<()> {
         "clippy::almost_complete_range",
         "clippy::arc_with_non_send_sync",
         "clippy::await_holding_lock",
-        "clippy::bool_comparison",
         "clippy::borrow_deref_ref",
         "clippy::borrowed_box",
         "clippy::cast_abs_to_unsigned",