fix(session): local Android create when multiple devices unselected

[Mochxd]

Local Android session create could silently bind to the wrong device when multiple emulators or USB devices were connected and the agent skipped select_device. iOS already had a guard on the create path; Android did not so adding validateAndroidDeviceSelection() and runs it from buildAndroidCapabilities() before session creation.
If more than one Android device is connected and there is no explicit target (select_device or appium:udid in capabilities), create fails with a clear error instead of picking an arbitrary device.

Changes

• add validateAndroidDeviceSelection() in create-session.ts
• make buildAndroidCapabilities() async and call validation on local create
• add unit tests for single device, multiple devices, remote server skip, and explicit appium:udid

[KazuCocoa]

Instead of this validation logic, I assume:

  const selectedDeviceUdid =
    !isRemoteServer && selectedLocalDevice?.platform === 'android'
      ? selectedLocalDevice?.udid
      : undefined;

can be

  const givenCaps = {...configCaps, ...customCaps};
  const selectedDeviceUdid =
    !isRemoteServer && !givenCaps['appium:udid'] && selectedLocalDevice?.platform === 'android'
      ? selectedLocalDevice?.udid
      : undefined;

Possibly iOS also can be simplified like this

[github-actions]

🎉 This PR is included in version 1.85.9 🎉

The release is available on:

• npm package (@latest dist-tag)
• GitHub release

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