Fix RNTesterUnitTests build by importing react/bridging/ArrayBuffer.h

[ramonclaudio]

Summary:

Imports react/bridging/ArrayBuffer.h in RCTTurboModuleArrayBufferTests.mm, so RNTesterUnitTests compiles and yarn test-ios works on main again.

The test uses detail::OwnedBytesBuffer, which lives in facebook::react::detail in that header, but never imports it, and nothing in its include chain provides it, so detail resolves to facebook::jsi::detail and the target fails to compile before running a single test. The file already has using namespace facebook::react;, so the import is the entire fix. CI stays green because the test_ios_rntester jobs only build the app scheme and never compile RNTesterUnitTests, which means this file has never compiled in the repo since it landed in 54b88d9, and the yarn test-ios flow the contributing docs point at is the only thing that compiles it.

RCTTurboModuleArrayBufferTests.mm:294:42: error: use of undeclared identifier 'detail'; did you mean 'facebook::jsi::detail'?
RCTTurboModuleArrayBufferTests.mm:294:50: error: no member named 'OwnedBytesBuffer' in namespace 'facebook::jsi::detail'

Changelog:

[INTERNAL] [FIXED] - Fix RNTesterUnitTests build by importing react/bridging/ArrayBuffer.h in RCTTurboModuleArrayBufferTests

Test Plan:

• Without the import, xcodebuild build-for-testing -workspace RNTesterPods.xcworkspace -scheme RNTester -sdk iphonesimulator fails with the errors above, zero tests run. With it, the same build succeeds with no errors in the file.
• The patched file passes clang-format --dry-run --Werror.
• With the target compiling, the suite executes for the first time: 162 tests, 0 failures, including all RCTTurboModuleArrayBufferTests cases passing.
• Reproduced on GitHub-hosted macOS runners: the same build fails on pristine main with the errors above and succeeds with this change.