[test] Move cctest/test-modules to unittests

... /objects/modules-unittest.

Bug: v8:12781
Change-Id: Ie3d63ac470e435858dfd0e32b7fda2f78502aa17
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3607369Reviewed-by: Leszek Swirski <leszeks@chromium.org>
Commit-Queue: 王澳 <wangao.james@bytedance.com>
Cr-Commit-Position: refs/heads/main@{#80199}

test/cctest/BUILD.gn

@@ -235,7 +235,6 @@ v8_source_set("cctest_sources") {
     "test-log.cc",
     "test-managed.cc",
     "test-mementos.cc",
-    "test-modules.cc",
     "test-object.cc",
     "test-orderedhashtable.cc",
     "test-parsing.cc",

test/unittests/BUILD.gn

@@ -384,6 +384,7 @@ v8_source_set("unittests_sources") {
     "objects/concurrent-script-context-table-unittest.cc",
     "objects/concurrent-string-unittest.cc",
     "objects/concurrent-transition-array-unittest.cc",
+    "objects/modules-unittest.cc",
     "objects/object-unittest.cc",
     "objects/swiss-hash-table-helpers-unittest.cc",
     "objects/value-serializer-unittest.cc",