[bazel] Adds caged-heap.h

No-Try: true
Change-Id: Ibce0c1bf256102ffa71845faf563dc75057b7813
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3110612
Auto-Submit: Victor Gomes <victorgomes@chromium.org>
Reviewed-by: Anton Bikineev <bikineev@chromium.org>
Commit-Queue: Anton Bikineev <bikineev@chromium.org>
Cr-Commit-Position: refs/heads/main@{#76435}

BUILD.bazel

@@ -2572,6 +2572,7 @@ filegroup(
     name = "cppgc_base_files",
     srcs = [
         "src/heap/cppgc/allocation.cc",
+        "src/heap/cppgc/caged-heap.h",
         "src/heap/cppgc/compaction-worklists.cc",
         "src/heap/cppgc/compaction-worklists.h",
         "src/heap/cppgc/compactor.cc",