Rust 1.85 lints (#7019)

N/A


  2 changes:
1. Replace Option::map_or(true, ...) with is_none_or(...)
2. Remove unnecessary `Into::into` blocks where the type conversion is apparent from the types

consensus/state_processing/src/per_block_processing/block_signature_verifier.rs

@@ -293,7 +293,6 @@ where
                 )?);
                 Ok(())
             })
-            .map_err(Error::into)
     }
 
     /// Includes all signatures in `self.block.body.voluntary_exits` for verification.