Restore native Mono autocomplete sizing, focus and selection (#293) - #299

Non-nullable field '_tslCompiler' must contain a non-null value when exiting constructor. Consider adding the 'required' modifier or declaring the field as nullable.

Possible null reference return.

Possible null reference return.

Possible null reference return.

Possible null reference return.

Non-nullable field '_tslCompiler' must contain a non-null value when exiting constructor. Consider adding the 'required' modifier or declaring the field as nullable.

Possible null reference return.

Possible null reference return.

Possible null reference return.

Possible null reference return.