fix(ios): prevents lowercased API returns from causing mismatches 🍒

[Android][Stable] Investigate compatibility issues for older Android devices

cherry(lmlayer): 'default' word breaker issues

fix(developer): ci alternate installer path

CI needs to build the model compiler from an alternate path because the
production build from npm can have files not in the development build.

This was causing CI errors such as:
  kmlmc.wxs(170) : error LGHT0103 : The system cannot find the file
  'C:\...\node_modules\.bin\node.ps1'.

fix(windows): smp characters could break context 🍒

Fixes #2398.

This is a follow-on to #2358 to get Keyman keyboards to load for older Android devices (API 19-23).

* Update default nrc.en.mtnt.model to version 0.1.3 (SMP characters removed)
* Fix undefined console error

cherry(web): macOS Firefox detection/fire + test stability

[Android] ES6 & API 19-23 compatibility changes

[Android] Fix a few CloudRepository issues

[Android] Check getTextBeforeCursor() doesn't return null

[Web] Toolchain update (cherrypick)

fix(web): displayUnderlying flag was ignored 🍒

This fixes a test scenario involving 6 emojis (SMP characters) and the p^p^ context.

A backspace was removing an entire p^ grapheme. This fixes the contents of `newContext` that is used to determine the character sequence to restore

Fix crashlytics [issue](https://console.firebase.google.com/u/0/project/kmapro-ee779/crashlytics/app/android:com.tavultesoft.kmapro/issues/054f29f4c0601121ea1102c0eadf7cb6?time=last-seven-days&sessionId=5DDAD1AB0156000132ECCEAF30E92E2B_DNE_0_v2)

change(web): Updates unit test browser targets for CI

[Android] Workaround to fix left deletions