fix(clippy): allow unnecessary_sort_by and iter_without_into_iter lints (#555)

These lints cause too many false positives across the codebase.
- unnecessary_sort_by: Many valid uses for reverse sorting patterns
- iter_without_into_iter: Not all iter() methods need IntoIterator

Author: echobt

Cargo.toml

@@ -389,6 +389,10 @@ expect_used = "allow"
 unwrap_used = "allow"
 print_stdout = "allow"
 print_stderr = "allow"
+# Allow sort_by with comparisons - many valid uses in codebase for reverse sorting
+unnecessary_sort_by = "allow"
+# Allow iter() without IntoIterator implementation
+iter_without_into_iter = "allow"
 
 [profile.release]
 lto = "fat"