[baseline] Compile --always-sparkplug on the main thread

When --always-sparkplug, we compile on the main thread. This fixes the
CodeBuilder path when also running with --concurrent-sparkplug

Bug: v8:12054
Change-Id: Ifafcd68b635e99ca39c5eebc3e1ff839a2193eb4
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3233232
Commit-Queue: Victor Gomes <victorgomes@chromium.org>
Commit-Queue: Dominik Inführ <dinfuehr@chromium.org>
Auto-Submit: Victor Gomes <victorgomes@chromium.org>
Reviewed-by: Dominik Inführ <dinfuehr@chromium.org>
Cr-Commit-Position: refs/heads/main@{#77470}

src/heap/factory-inl.h

@@ -30,6 +30,11 @@ namespace internal {
 ROOT_LIST(ROOT_ACCESSOR)
 #undef ROOT_ACCESSOR
 
+bool Factory::CodeBuilder::CompiledWithConcurrentBaseline() const {
+  return FLAG_concurrent_sparkplug && kind_ == CodeKind::BASELINE &&
+         !local_isolate_->is_main_thread();
+}
+
 Handle<String> Factory::InternalizeString(Handle<String> string) {
   if (string->IsInternalizedString()) return string;
   return isolate()->string_table()->LookupString(isolate(), string);

src/heap/factory.h

@@ -934,9 +934,7 @@ class V8_EXPORT_PRIVATE Factory : public FactoryBase<Factory> {
       return *this;
     }
 
-    bool CompiledWithConcurrentBaseline() const {
-      return FLAG_concurrent_sparkplug && kind_ == CodeKind::BASELINE;
-    }
+    inline bool CompiledWithConcurrentBaseline() const;
 
    private:
     MaybeHandle<Code> BuildInternal(bool retry_allocation_or_fail);