RFR: JDK-8298528: Clean up raw type warnings in base in bindings and collections packages [v2]

[Nir Lisker]

On Sun, 1 Jan 2023 16:08:15 GMT, John Hendrikx <jhendrikx at openjdk.org> wrote:

>> Packages fixed:
>> - com.sun.javafx.binding
>> - com.sun.javafx.collections
>> - javafx.beans
>> - javafx.beans.binding
>> - javafx.collections
>> - javafx.collections.transformation
>
> John Hendrikx has updated the pull request incrementally with two additional commits since the last revision:
> 
>  - Clean up expression classes repeated null checks
>  - Use instanceof with pattern matching in a few spots

I looked at it again. I think it would be best to do the sorting-related changes separately. The rest looks good.

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PR: https://git.openjdk.org/jfx/pull/972