[test] Move cctest/test-code-pages to unittests

... /codegen/code-pages-unittest.

Bug: v8:12781
Change-Id: Ied73476c801257fc9497b5101ea49a98b657f8ea
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3599404Reviewed-by: Leszek Swirski <leszeks@chromium.org>
Commit-Queue: 王澳 <wangao.james@bytedance.com>
Cr-Commit-Position: refs/heads/main@{#80134}

test/cctest/BUILD.gn

@@ -197,7 +197,6 @@ v8_source_set("cctest_sources") {
     "test-bignum.cc",
     "test-circular-queue.cc",
     "test-code-layout.cc",
-    "test-code-pages.cc",
     "test-code-stub-assembler.cc",
     "test-concurrent-prototype.cc",
     "test-concurrent-transition-array.cc",

test/unittests/BUILD.gn

@@ -240,6 +240,7 @@ v8_source_set("unittests_sources") {
     "base/vlq-base64-unittest.cc",
     "base/vlq-unittest.cc",
     "codegen/aligned-slot-allocator-unittest.cc",
+    "codegen/code-pages-unittest.cc",
     "codegen/code-stub-assembler-unittest.cc",
     "codegen/code-stub-assembler-unittest.h",
     "codegen/register-configuration-unittest.cc",