[nojit] Fix noembed bot failures

noembed bots have started failing since https://crrev.com/c/1382461.

The reason was that inline_offheap_trampolines option was set to true
even in noembed builds, and the assembler tried to inline trampolines
to non-existent embedded builtins.

Tbr: sigurds@chromium.org
Bug: v8:7777
Change-Id: I483dd8b77269b8684e57f8da6e659a9648b1657b
Reviewed-on: https://chromium-review.googlesource.com/c/1390117
Commit-Queue: Jakob Gruber <jgruber@chromium.org>
Reviewed-by: Jakob Gruber <jgruber@chromium.org>
Cr-Commit-Position: refs/heads/master@{#58458}

src/assembler.cc

@@ -77,7 +77,7 @@ AssemblerOptions AssemblerOptions::Default(
   options.enable_simulator_code = !serializer;
 #endif
   options.inline_offheap_trampolines =
-      !serializer && !generating_embedded_builtin;
+      FLAG_embedded_builtins && !serializer && !generating_embedded_builtin;
 #if V8_TARGET_ARCH_X64 || V8_TARGET_ARCH_ARM64
   const base::AddressRegion& code_range =
       isolate->heap()->memory_allocator()->code_range();