fix(android): suppress autocorrection of hardware keystroke input

[jahorton]

Fixes: #16602

Build-bot: skip release:web,android

This PR adds a "autocorrect suppression" flag to the Web engine's KeyEvent type, allowing us to precisely target cases where autocorrect should be suppressed.

Note that this will allow autocorrect to still occur for hardware keystrokes on the Web-based testing page; the OSK remains visible there during typing, so this should be fine. It's not "fine" for Android because hardware keystrokes auto-hide the OSK, leaving no way to bypass autocorrect.

User Testing

TEST_REPRO: Use Keyman for Android on a physical device and an external hardware keyboard and verify that the repro in the base issue no longer reproduces.

1. Again, use a physical device with an external hardware keyboard for this test.
2. Set the language to English.
3. Using the external hardware keyboard, type m a r c, then tap the spacebar.
4. Verify that no adjustment to the next occurs. The text should remain marc and not be transformed into March or march .

[keymanapp-test-bot]

User Test Results

Test specification and instructions

• ✅ TEST_REPRO (PASSED) (notes)

Test Artifacts

• Android
  • Keyman for Android apk
  • FirstVoices Keyboards for Android apk
  • KeyboardHarness apk
  • KMSample1 apk
  • KMSample2 apk
• Web
  • KeymanWeb Test Home

[jahorton]

Oh, I assigned instead of requesting review... 🤦

[Meng-Heng]

Test Specs

1. Keyman for Android v19.0.288-alpha-test-16606
2. Galaxy A05 Android v15.0
3. Bluetooth Microsoft keyboard

Test Results

• TEST_REPRO (PASSED):

1. EuroLatin (SIL) with the English language pre-selected
2. With the external hardware keyboard, type marc, then tap the spacebar
3. VERIFIED: No adjustment to the next occurs, the text remains marc and not transformed into March or march .