Defines module for React-jsinspector (#44252)

Summary:
Defines module for `React-jsinspector` that for swift modules to integrate with.

to fix expo/expo#28209, any podspec depends on HermesExecutorFactory should use ` add_dependency(s, "React-jsinspector", :framework_name => 'jsinspector_modern')` to add dependency. otherwise it will encounter the header not found issue because use_frameworks will change "jsinspector-modern" to "jsinspector_modern".

to depend on React-jsinspector from expo-modules-core, we need it to define as a module.
otherwise, it will have the error
```
The Swift pod `ExpoModulesCore` depends upon `React-jsinspector`, which does not define modules. To opt into those targets generating module maps (which is necessary to import them from Swift when building as static libraries), you may set `use_modular_headers!` globally in your Podfile, or specify `:modular_headers => true` for particular dependencies.
```

## Changelog:

[IOS] [CHANGED] - Add `DEFINES_MODULE` for React-jsinspector.podspec

Pull Request resolved: #44252

Test Plan: ci passed

Reviewed By: cortinico

Differential Revision: D56575102

Pulled By: cipolleschi

fbshipit-source-id: 9b7b4568a3e499f0a741a79a846263118ff2d112

packages/react-native/ReactCommon/jsinspector-modern/React-jsinspector.podspec

@@ -38,7 +38,8 @@ Pod::Spec.new do |s|
   s.compiler_flags         = folly_compiler_flags
   s.pod_target_xcconfig    = {
                                "HEADER_SEARCH_PATHS" => "\"$(PODS_TARGET_SRCROOT)/..\" \"$(PODS_ROOT)/boost\" \"$(PODS_ROOT)/RCT-Folly\" \"$(PODS_ROOT)/DoubleConversion\" \"$(PODS_ROOT)/fmt/include\"",
-                               "CLANG_CXX_LANGUAGE_STANDARD" => "c++20"
+                               "CLANG_CXX_LANGUAGE_STANDARD" => "c++20",
+                               "DEFINES_MODULE" => "YES"
   }.merge!(use_frameworks ? {
     "PUBLIC_HEADERS_FOLDER_PATH" => "#{module_name}.framework/Headers/#{header_dir}"
   } : {})