[BUILD] Add yield-processor.h to build files

Especially bazel requires it.

No-Try: true
Change-Id: I1e9bfc705601492fff4690e76692b9271070d065
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3322932Reviewed-by: Camillo Bruni <cbruni@chromium.org>
Commit-Queue: Marja Hölttä <marja@chromium.org>
Cr-Commit-Position: refs/heads/main@{#78301}

BUILD.bazel

@@ -621,6 +621,7 @@ filegroup(
         "src/base/v8-fallthrough.h",
         "src/base/vlq-base64.cc",
         "src/base/vlq-base64.h",
+        "src/base/platform/yield-processor.h",
     ] + select({
         "@config//:is_posix": [
             "src/base/platform/platform-posix.cc",

BUILD.gn

@@ -5028,6 +5028,7 @@ v8_component("v8_libbase") {
     "src/base/platform/time.cc",
     "src/base/platform/time.h",
     "src/base/platform/wrappers.h",
+    "src/base/platform/yield-processor.h",
     "src/base/region-allocator.cc",
     "src/base/region-allocator.h",
     "src/base/ring-buffer.h",