CLI: enable Wasm custom-page-sizes proposal by default (#1363)

CLI: enable custom-page-sizes proposal by default

We do not (yet) have CLI options to enable or disable Wasm proposals, so it is more usable to just enable all available ones at the moment so users can try them out.

crates/cli/src/context.rs

@@ -33,6 +33,7 @@ impl Context {
             config.consume_fuel(true);
         }
         config.compilation_mode(compilation_mode);
+        config.wasm_custom_page_sizes(true);
         let engine = wasmi::Engine::new(&config);
         let wasm =
             fs::read(wasm_file).map_err(|_| anyhow!("failed to read Wasm file {wasm_file:?}"))?;