fix(🍏): include cpp/api, cpp/skia, cpp/jsi, cpp/rnskia, cpp/utils in HEADER_SEARCH_PATHS

Under `use_frameworks! :linkage => :static` (or Expo's
`useFrameworks: 'static'`), the recursive `"$(PODS_TARGET_SRCROOT)/cpp/"/**`
glob does not propagate to sibling directories, so compilation of
`cpp/api/third_party/base64.cpp` fails with `'third_party/base64.h' file not
found` (and similar misses for headers under `cpp/skia`, `cpp/jsi`,
`cpp/rnskia`, `cpp/utils`).

Add those five paths explicitly alongside the existing rnwgpu/dawn entries
so static-frameworks builds resolve them.

Fixes #3839.

Author: mini-777

packages/skia/react-native-skia.podspec

@@ -65,7 +65,7 @@ Pod::Spec.new do |s|
     'GCC_PREPROCESSOR_DEFINITIONS' => preprocessor_defs,
     'CLANG_CXX_LANGUAGE_STANDARD' => 'c++17',
     'DEFINES_MODULE' => 'YES',
-    "HEADER_SEARCH_PATHS" => '"$(PODS_TARGET_SRCROOT)/cpp/"/** "$(PODS_TARGET_SRCROOT)/cpp" "$(PODS_TARGET_SRCROOT)/cpp/jsi2" "$(PODS_TARGET_SRCROOT)/cpp/rnwgpu" "$(PODS_TARGET_SRCROOT)/cpp/rnwgpu/api" "$(PODS_TARGET_SRCROOT)/cpp/rnwgpu/api/descriptors" "$(PODS_TARGET_SRCROOT)/cpp/rnwgpu/async" "$(PODS_TARGET_SRCROOT)/cpp/dawn/include"'
+    "HEADER_SEARCH_PATHS" => '"$(PODS_TARGET_SRCROOT)/cpp/"/** "$(PODS_TARGET_SRCROOT)/cpp" "$(PODS_TARGET_SRCROOT)/cpp/api" "$(PODS_TARGET_SRCROOT)/cpp/skia" "$(PODS_TARGET_SRCROOT)/cpp/jsi" "$(PODS_TARGET_SRCROOT)/cpp/jsi2" "$(PODS_TARGET_SRCROOT)/cpp/rnskia" "$(PODS_TARGET_SRCROOT)/cpp/utils" "$(PODS_TARGET_SRCROOT)/cpp/rnwgpu" "$(PODS_TARGET_SRCROOT)/cpp/rnwgpu/api" "$(PODS_TARGET_SRCROOT)/cpp/rnwgpu/api/descriptors" "$(PODS_TARGET_SRCROOT)/cpp/rnwgpu/async" "$(PODS_TARGET_SRCROOT)/cpp/dawn/include"'
   }
 
   s.frameworks = ['MetalKit', 'AVFoundation', 'AVKit', 'CoreMedia']