script_bindings Start wrapping unsafe code in unsafe {} (#38545)

This is useful to better isolate `unsafe` code. Once all unsafe calls
are wrapped we can enable the Rust warning.  This also explicitly
disables the warning for generated code, which is a much more difficult
task. After this change there are 211 warnings left in
`script_bindings`.

Testing: This should not change behavior and is thus covered by existing
tests.

Signed-off-by: Martin Robinson <mrobinson@igalia.com>

components/script_bindings/lib.rs

@@ -45,7 +45,7 @@ pub mod trace;
 pub mod utils;
 pub mod weakref;
 
-#[allow(non_snake_case)]
+#[allow(non_snake_case, unsafe_op_in_unsafe_fn)]
 pub mod codegen {
     pub mod Globals {
         include!(concat!(env!("OUT_DIR"), "/Globals.rs"));