rust: Disable Byte Grouping Linter

Disable the byte grouping clippy lint by default. In some cases it makes
sense to group bytes in a protocol-specific fashion, so let's not error
on this lint.

Bug: 181171365
Test: Clippy allows this lint.
Change-Id: I2705dc7fa901b997bcb01f1256d48e85ce35065c
diff --git a/rust/config/lints.go b/rust/config/lints.go
index ac8165b..7c05e4f 100644
--- a/rust/config/lints.go
+++ b/rust/config/lints.go
@@ -53,6 +53,7 @@
 	defaultClippyLints = []string{
 		"-A clippy::type-complexity",
 		"-A clippy::unnecessary-wraps",
+		"-A clippy::unusual-byte-groupings",
 	}
 
 	// Rust lints for vendor code.