Podspec not published to npm if the package name contains hyphens

[shirakaba]

Bug

The files array generated by package.json removes any hyphens from the name of the generated podspec, and thus won't publish the podspec when publishing a package whose name includes hyphens to npm.

For a project named react-native-safe-popover, the package.json's files array comes out as:

  "files": [
    "src",
    "lib",
    "android",
    "ios",
    "reactnativesafepopover.podspec"
  ],

The podspec, meanwhile, is named react-native-safe-popover.podspec.

Environment info

react-native info output:

System:
    OS: macOS Mojave 10.14.6
    CPU: (4) x64 Intel(R) Core(TM) i5-7360U CPU @ 2.30GHz
    Memory: 785.12 MB / 16.00 GB
    Shell: 4.4.23 - /usr/local/bin/bash
  Binaries:
    Node: 13.4.0 - /usr/local/bin/node
    Yarn: 1.21.1 - /usr/local/bin/yarn
    npm: 6.13.4 - /usr/local/bin/npm
    Watchman: 4.9.0 - /usr/local/bin/watchman
  SDKs:
    iOS SDK:
      Platforms: iOS 13.2, DriverKit 19.0, macOS 10.15, tvOS 13.2, watchOS 6.1
    Android SDK:
      API Levels: 28, 29
      Build Tools: 28.0.3, 29.0.0
      System Images: android-28 | Google Play Intel x86 Atom
  IDEs:
    Android Studio: 3.5 AI-191.8026.42.35.6010548
    Xcode: 11.3.1/11C504 - /usr/bin/xcodebuild
  npmPackages:
    react: ~16.9.0 => 16.9.0 
    react-native: ~0.61.5 => 0.61.5

Library version: 0.10.0

Steps To Reproduce

npx @react-native-community/bob create react-native-safe-popover
cd react-native-safe-popover
yarn bootstrap

Describe what you expected to happen:

Either of these two:

1. The podspec should be called react-native-safe-popover.podspec AND the files array in package.json should include react-native-safe-popover.podspec.
2. The podspec should be called reactnativesafepopover.podspec AND the files array in package.json should include reactnativesafepopover.podspec.

Option 1 would be preferable, as it preserves the package name.

Reproducible sample code

See "Steps To Reproduce".