RFR: 8286620: Create regression test for verifying setMargin() of JRadioButton

[Jayathirth D V]

On Mon, 16 May 2022 06:45:04 GMT, Tejesh R <duke at openjdk.java.net> wrote:

> Added test for checking setMargin() of JRadioButton.

Marked as reviewed by jdv (Reviewer).

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PR: https://git.openjdk.java.net/jdk/pull/8721