[wasm] Enable --wasm-generic-wrapper

This CL enables the --wasm-generic-wrapper flag by default.

Bug: v8:10982
Change-Id: Iada906ce49810806c500ee3ca26e09e847b69a27
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2539915
Commit-Queue: Vicky Kontoura <vkont@google.com>
Reviewed-by: Andreas Haas <ahaas@chromium.org>
Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
Cr-Commit-Position: refs/heads/master@{#71374}

src/flags/flag-definitions.h

@@ -776,8 +776,9 @@ DEFINE_BOOL(untrusted_code_mitigations, V8_DEFAULT_UNTRUSTED_CODE_MITIGATIONS,
 #undef V8_DEFAULT_UNTRUSTED_CODE_MITIGATIONS
 
 // Flags for native WebAssembly.
-DEFINE_BOOL(wasm_generic_wrapper, false,
-            "use generic js-to-wasm wrapper instead of per-signature wrappers")
+DEFINE_BOOL(wasm_generic_wrapper, true,
+            "allow use of the generic js-to-wasm wrapper instead of "
+            "per-signature wrappers")
 DEFINE_BOOL(expose_wasm, true, "expose wasm interface to JavaScript")
 DEFINE_INT(wasm_num_compilation_tasks, 128,
            "maximum number of parallel compilation tasks for wasm")