Change octal number to hex

This was causing issues with strict mode when combined with fuzzers. See
https://crrev.com/c/2173952/7/test/mjsunit/wasm/wasm-module-builder.js#471

Change-Id: I164b24c35d7ba7c53a550dc3649eb7268dfb30e1
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2252540Reviewed-by: Michael Achenbach <machenbach@chromium.org>
Commit-Queue: Zhi An Ng <zhin@chromium.org>
Cr-Commit-Position: refs/heads/master@{#68420}

test/mjsunit/wasm/wasm-module-builder.js

@@ -482,7 +482,7 @@ let kExprI32x4Eq = 0x37;
 let kExprV8x16AnyTrue = 0x62;
 let kExprV8x16AllTrue = 0x63;
 let kExprI8x16Add = 0x6e;
-let kExprI16x8ShrS = [0x8c, 01];
+let kExprI16x8ShrS = [0x8c, 0x01];
 let kExprV32x4AnyTrue = 0xa2;
 let kExprF32x4Min = 0xe8;