Fix clippy bool_assert_comparison errors

[Copilot]

Rust 1.96 + clippy::bool_assert_comparison (implied by -D warnings) rejects assert_eq! comparisons against literal bools.

Changes

• src/parser/regex.rs / src/progress/style.rs: Replace all assert_eq!(expr, true/false) with assert!(expr) / assert!(!expr)

// Before
assert_eq!(regex_processor.regex_mode(), false);
assert_eq!(result.is_err(), false);
assert_eq!(result.enable_steady_tick, true);

// After
assert!(!regex_processor.regex_mode());
assert!(result.is_ok());
assert!(result.enable_steady_tick);