[0.88] Make RCTArrayBuffer bridge backward compatible

[cipolleschi]

Summary:

Makes the Objective-C ArrayBuffer TurboModule change from 11f9a7f backward compatible for React Native 0.88.

• Keeps the pre-existing Objective-C selectors and exact NSData parameter / NSMutableData return signatures as required protocol methods.
• Adds optional RCTArrayBuffer entry points with a WithRCTArrayBuffer selector suffix.
• Makes generated dispatch prefer the new entry point when implemented and fall back to the legacy entry point for existing modules.
• Updates the sample module so legacy implementations wrap/unwrap NSData and NSMutableData and delegate to the new RCTArrayBuffer methods, where the actual logic lives.
• Restores the previous public C++ conversion, invocation, and setInvocationArg overloads alongside the newer overloads.
• Preserves the zero-copy synchronous path for the new entry points while retaining the legacy owning-copy behavior.

Changelog:

[IOS] [FIXED] - Preserve the legacy Objective-C TurboModule ArrayBuffer API alongside the RCTArrayBuffer API.

Test Plan:

• yarn test packages/react-native-codegen/src/generators/modules/tests/GenerateModuleHObjCpp-test.js --runInBand — passed, 15 tests and 13 snapshots.
• yarn test packages/react-native-codegen/src/generators/modules/tests/GenerateModuleMm-test.js --runInBand — passed, 13 tests and 13 snapshots.
• yarn test packages/react-native-codegen/e2e/deep_imports/tests/modules/GenerateModuleObjCpp-test.js --runInBand — passed, 3 tests and 3 snapshots.
• yarn --cwd packages/react-native-codegen build — passed.
• yarn clang-format on the changed native sources, Prettier 3.9.4, and git diff --check — passed.
• Apple C++ API view regenerated with the CI Doxygen version 1.16.1; the ArrayBuffer entries match the committed snapshots.
• Focused RCTTurboModuleArrayBufferTests via xcodebuild could not run locally because the existing Pods project is stale and fails before this target on missing Yoga/cxxstable headers. The added legacy fallback, wrapper, zero-copy, ownership, and async lifetime cases are left for CI.

[cipolleschi]

Suggested change

	- (RCTArrayBuffer *)getArrayBufferWithRCTArrayBuffer;
	- (RCTArrayBuffer *)getArrayBufferAsRCTArrayBuffer;

[cipolleschi]

Suggested change

	- (void)voidArrayBufferWithRCTArrayBuffer:(RCTArrayBuffer *)arg;
	- (void)voidArrayBufferFromRCTArrayBuffer:(RCTArrayBuffer *)arg;

[cipolleschi]

Suggested change

	- (void)voidNullableArrayBufferWithRCTArrayBuffer:(RCTArrayBuffer * _Nullable)arg;
	- (void)voidNullableArrayBufferFromRCTArrayBuffer:(RCTArrayBuffer * _Nullable)arg;