3823 [path_provider_*] code cleanup: sort directives (cla: yes, waiting for tree to go green, p: path_provider, platform-windows, platform-macos, platform-linux)

3832 [in_app_purchase] Federated iOS implementation (cla: yes, waiting for tree to go green, p: in_app_purchase, platform-ios)

3879 [in_app_purchase] Update to pub version of in_app_purchase_platform_interface dependency (cla: yes, waiting for tree to go green, p: in_app_purchase, platform-ios, platform-android)

3881 [image_picker] Image picker fix alert (cla: yes, waiting for tree to go green, p: image_picker, platform-ios)

3885 Revert “Temporarily run Windows tests via GitHub Actions” (cla: yes, waiting for tree to go green)