feat(paginator): allow page size selection to be disabled

[crisbeto]

Adds an input that allows the consumer to disable the page size selection entirely.

Fixes #8359.

Note: the AoT compilation error is coming from master and will be fixed in another PR.

[crisbeto]

@andrewseguin I was torn between doing this and having some logic where the select is hidden if you pass in an empty array of options. I went with this since it's a bit more obvious what is going on.

[nicu-chiciuc]

At the moment an empty array will display a label (whereas if there are several elements, it will display a dropdown) so I think overwriting the current behaviour wouldn't have been a good idea.

@crisbeto btw, thanks for the fast response to the issue.

[andrewseguin]

Sorta conflicted on this one - seems like an easy CSS display: none for the user if they don't want it part of the UI, but it is nice when there's an API to make it feel more supported and less of a hack.

How do you feel about renaming as showPageSize? Or hidePageSize and default to false?

[crisbeto]

Renamed to hidePageSize @andrewseguin, can you take another look?

[tinayuangao]

@crisbeto Could you please fix the tests? Thanks

[crisbeto]

I think those failures were coming in from master @tinayuangao. I've rebased it against the current master.

[andrewseguin]

Can you verify that the tests are actually passing?

[crisbeto]

Sorted out the paginator failures, there are still some failures from master, but they're unrelated.

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