fix(android/engine): Handle globe key on lock screen

[darcywong00]

@dinakaranr reported the Keyman globe wasn't responding on the lock screen.

This fixes the transition on the lock screen to handle the Globe key on key press (GLOBE_KEY_STATE_DOWN).

Will 🍒 pick to stable-17.0

User Testing

Setup -

1. Install the PR build of Keyman for Android on an emulator. Best to use an emulator in case the lock screen gets stuck on the wrong keyboard for entering the password.
2. On the Android emulator Settings, set the lock screen to use a password of "qwerty".

TEST_KEYMAN_LOCK_SCREEN - Verifies Keyman globe key on lock screen

1. Launch Keyman
2. From "Get Started", set Keyman as the default ksystem keyboard.
3. Launch Chrome and select a text field.
4. Switch to Keyman if it's no the current keyboard.
5. Lock the emulator
6. Press button to enter the lock screen
7. With Keyman on the lock screen, press and release the globe key
8. Verify the keyboard switches to another system keyboard (non-Keyman).

[keymanapp-test-bot]

User Test Results

Test specification and instructions

• ✅ TEST_KEYMAN_LOCK_SCREEN (PASSED): I tested this issue with the attached "Keyman 18.0.37-alpha-test-11458" build on Android 14 (emulator and physical devices) environment: Here is my observation. (notes)

Test Artifacts

• Android
  • Keyman for Android apk
  • FirstVoices for Android 16.0 apk
  • FirstVoices Keyboards for Android apk
  • KeyboardHarness apk
  • Keyman for Android 16.0 apk
  • KMSample1 apk
  • KMSample2 apk

[dinakaranr]

Test Results

• TEST_KEYMAN_LOCK_SCREEN (PASSED): I tested this issue with the attached "Keyman 18.0.37-alpha-test-11458" build on Android 14 (emulator and physical devices) environment: Here is my observation.

1. Installed the "Keyman-18.0.37.apk" file and gave all permissions to the application.
2. Checked the "Enable Keyman as system-wide keyboard" and set the keyboard as the default keyboard box on the settings page.
3. Open the Keyman App and then add any two keyboards.
4. On Android 14 Mobile and Emulator: set the lock screen to use a password of "qwerty."
5. Press the lock button on the mobile.
6. On Lock screen: The Keyman keyboard appears on the lock screen. Press the globe key and then observe that the keyman switches from English to another language.
   If Keyman had only one keyboard and then switched to another system keyboard(Gboard). It works well. Thank you.

[keyman-server]

Changes in this pull request will be available for download in Keyman version 18.0.37-alpha