fix(android): Convert Keyman app layouts for edge to edge 🏠

[darcywong00]

Follows #14584
This 🍒 picks #14396 and #14463 to stable-18.0 so the Keyman for Android app activities handle the "Edge-to-edge" behavior of Android API 35. Activity layouts handle system insets (top status bar/camera notch and bottom navigation bar).

User Testing

Setup - Install the PR build of Keyman for Android on an Android emulator/device of Android API 34

• TEST_KEYMAN_ACTVITIES - Verifies activities within the Keyman app are not obstructed by system insets (camera notch, status bar, navigation bars)

1. For the entire test, if a portion of the activity is covered by system insets (camera notch, status bar on top, navigation bar on bottom), fail the test.
2. With the device in Portrait orientation, launch Keyman for Android and dismiss the Get Started menu
3. Go through the various workflows/activities and verify none of the menus are covered by system insets:
   • longpress globe key for keyboard picker menu --> EuroLatin help --> Help link --> keyboard help scrollable and can "OK" at the bottom
   • Keyman menu --> Info --> Navigate through the in-app help content and verify version remains visible at the bottom
4. Go through the various Keyman settings menus and verify none of the menus are covered by system insets:
   • Installed languages --> click through each menu
   • Install Keyboard or Dictionary -->
     • Install from keyman.com --> install keyboard and verify you can navigate through menus
     • Add languages to installed keyboard --> EuroLatin Keyboard --> add language(s) to install with EuroLatin and verify can "INSTALL"
   • Display language --> verify UI language can be changed
   • Adjust keyboard height --> verify keyboard height can be adjusted and reset
   • Adjust longpress delay --> verify longpress delay can be adjusted
5. Return the Keyman app and rotate the device to landscape orientation (unlock orientation lock if needed)
6. Repeat test steps in landscape orientation

• TEST_SYSTEM_KEYBOARD - Verifies Keyman system keyboard is not obstructed by system insets (camera notch, status bar, navigation bars)

1. With the device in portrait orientation, from Keyman for Android settings, set Keyman as the default system keyboard
2. Launch Chrome and select a text area to type
3. With Keyman as the system keyboard verify:
   • OSK and suggestions not covered by system insets
   • keys, longpress keys, and suggestions function
4. Rotate the device to landscape orientation (unlock orientation lock if needed)
5. Repeat test steps in landscape orientation

[keymanapp-test-bot]

User Test Results

Test specification and instructions

• ✅ TEST_KEYMAN_ACTVITIES (PASSED): notes (notes)
• ✅ TEST_SYSTEM_KEYBOARD (PASSED): notes (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

[Nnyny]

Test Results

Before testing:
- Install keyman-18.0.239.apk on API 34

• TEST_KEYMAN_ACTVITIES (PASSED): notes

1. Start Keyman and dismiss the 'Get Started'
2. Longpress the globe, go to 'Help link' > scroll the welcome page > OK
3. Verify no menus are covered by system insets
4. Go to Keyman menu > 'Info' > scroll down
5. Verify the version remain visible
6. Successfully install Amharic keyboard and verify no menus are covered by system insets
7. Successfully add a language to EuroLatin keyboard and verify no menus are covered by system insets
8. Go to 'Display language' and successfully change the UI to another language
9. Go to 'Adjust keyboard height' successfully change the keyboard height and set back to default
10. Go to 'Adjust longpress delay' and successfully change the delay of longpress
11. Turn the emulator to landscape
12. Repeat the process and verify no menus are covered by system insets

• TEST_SYSTEM_KEYBOARD (PASSED): notes

1. Go to 'Get Started' and select 'Enable Keyman as system-wide keyboard' and 'Set Keyman as default keyboard'
2. Go to Chrome and select the text area
3. Verify the keyboards and dictionaries are working fine and nothing is cover by the system insets
4. Rotate to landscape
5. Start typing in the text area, using different keyboards and dictionaries
6. Verify no area is cover by system insets

[darcywong00]

Returning to draft to resolve #14579

[darcywong00]

back to ready
#14642 addresses #14579 for stable-18.0

[keyman-server]

Changes in this pull request will be available for download in Keyman version 18.0.241