feat(node-core): stage progress decimal places

[shekhirin]

Blocked by #6973

This formula adjustment prevents the situation when 99.9999% rounds to 100% and confuses the user, because the stage isn't finished yet, but reports the 100% progress

reth/crates/primitives/src/stage/checkpoints.rs

Lines 151 to 155 in 84f977c

	// Calculate percentage with 2 decimal places.
	let percentage = 100.0 * self.processed as f64 / self.total as f64;
	// Truncate to 2 decimal places, rounding down so that 99.999% becomes 99.99% and not 100%.
	Some(format!("{:.2}%", (percentage * 100.0).floor() / 100.0))