chore(web): fixes cases of implicit-any in web/ 🔩

[jahorton]

This one was a bit less straightforward than some of the previous TS compiler flag PRs - certain cases required some special setup. (Such as the mouse & touch event emulation for certain automated tests.)

Addresses part of #11473.

@keymanapp-test-bot skip

[keymanapp-test-bot[bot]]

User Test Results

Test specification and instructions

User tests are not required

Test Artifacts

• Android
  • KeyboardHarness apk
  • KMSample1 apk
  • KMSample2 apk
• Developer
  • Keyman Developer
  • Compiler Regression Tests
  • kmcomp.zip
• iOS
  • Keyman for iOS (simulator image)
  • FirstVoices Keyboards for iOS (simulator image)
  • TestFlight internal PR build version - 18.0.45 (0.11462.11143)
• Keyboards
  • Test Keyboards
• Web
  • KeymanWeb Test Home - build failure
• Windows
  • Keyman for Windows
  • FirstVoices Keyboards for Windows
  • Text Editor (32 bit)
  • Text Editor (64 bit)

[mcdurdin]

Can you include a reference for why this is being done?