RFR: 8303250: Call ct_max_alignment_constraint using the base class

[Kim Barrett]

On Mon, 27 Feb 2023 14:10:45 GMT, Albert Mingkun Yang <ayang at openjdk.org> wrote:

> Trivial refactoring to use more precise class.

Yes, G1 shouldn't be using CardTableRS, and this is the only place it does.
Looks good, and trivial.

Marked as reviewed by kbarrett (Reviewer).

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PR: https://git.openjdk.org/jdk/pull/12765