Fix TrackBumpPointerAllocations for single generation

Single generation doesn't have a young generation, so we cannot check
whether it's inline allocation is enabled.

Bug: v8:12615
Change-Id: I145e7c3ff225dc0099136289c9aef4ddd28b3578
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3487993
Auto-Submit: Michael Lippautz <mlippautz@chromium.org>
Reviewed-by: Dominik Inführ <dinfuehr@chromium.org>
Commit-Queue: Dominik Inführ <dinfuehr@chromium.org>
Cr-Commit-Position: refs/heads/main@{#79316}

test/cctest/test-heap-profiler.cc

@@ -3000,7 +3000,8 @@ TEST(TrackBumpPointerAllocations) {
 
     // Now check that not all allocations are tracked if we manually reenable
     // inline allocations.
-    CHECK(!CcTest::heap()->new_space()->IsInlineAllocationEnabled());
+    CHECK(i::FLAG_single_generation ||
+          !CcTest::heap()->new_space()->IsInlineAllocationEnabled());
     CcTest::heap()->EnableInlineAllocation();
 
     CompileRun(inline_heap_allocation_source);