fix: Support for older browser versions on Android

[SamuelLeclerc33]

Describe the bug
When starting an app that uses this package on an older android device (with a webview prior to 80), we get an error from the javascript ran in the function setProperty from this library.

To Reproduce
Steps to reproduce the behavior:

1. Create a new capacitor projet and install this package
2. Build and run on android on an older device with webview prior to 80.
3. See that we get an 'Uncaught SyntaxError: Unexpected token .'

Expected behavior
I expect the library to work for all the devices that capacitor supports (unless specified in the readme).

Screenshots
If applicable, add screenshots to help explain your problem.

Smartphone

• Device: Emulator
• OS: Android 7.0 Nougat
• Version 69

Additional context
In my opinion, this library should at least support the same versions has capacitor.

The solution is simply to change the js introduced at line 108 in SafeArea.kt to remove the optional chaning operator (?.) and replace it with a simple if.

I already have a fix ready that I'm using internally and I'd be able to make a PR for the changes.

Thanks

[tafelnl]

PRs are welcome

[SamuelLeclerc33]

Pr created : #28

[SamuelLeclerc33]

@tafelnl any news ? I'm willing to do changes

[tafelnl]

TBH, I'm a bit hesitant to incorporate this into the library. It feels hackish, and therefore will kinda pollute the code base and bring additional maintenance work. Chrome 70 has been released on October 17, 2018. That's almost 6 years ago. Most users should have updated their browser since then. I doubt that it's worth it to add support for such a minor user base. Even if you wanted to use this plugin and support Chrome versions older than 70, you could still just only initialize this plugin after checking for the chrome version yourself. So unless there appears to be much more demand for this, I will probably not merge it. I'm sorry