Bug adding import to a list of imports containing duplicate imports

[nguyenhoan]

What version of OpenRewrite are you using?

I am using the latest version from the tip of GitHub's main branch.

How are you running OpenRewrite?

What is the smallest, simplest way to reproduce the problem?

Add the below test case to org.openrewrite.java.style.ImportLayoutStyleTest

    @Test
    void testAddImport() {
        ImportLayoutStyle style = new ImportLayoutStyle(
          Integer.MAX_VALUE, Integer.MAX_VALUE, Collections.emptyList(), Collections.emptyList());
        JRightPadded<J.Import> import1 = new JRightPadded<>(
          new J.Import(
            randomId(),
            Space.EMPTY,
            Markers.EMPTY,
            new JLeftPadded<>(Space.SINGLE_SPACE, true, Markers.EMPTY),
            TypeTree.build("pkg.Clazz.MEMBER_1").withPrefix(Space.SINGLE_SPACE),
            null),
          Space.EMPTY,
          Markers.EMPTY);
        JRightPadded<J.Import> import2 = new JRightPadded<>(
          new J.Import(
            randomId(),
            Space.EMPTY,
            Markers.EMPTY,
            new JLeftPadded<>(Space.SINGLE_SPACE, true, Markers.EMPTY),
            TypeTree.build("pkg.Clazz.MEMBER_1").withPrefix(Space.SINGLE_SPACE),
            null),
          Space.EMPTY,
          Markers.EMPTY);
        J.Import importToAdd = new J.Import(
          randomId(),
          Space.EMPTY,
          Markers.EMPTY,
          new JLeftPadded<>(Space.SINGLE_SPACE, true, Markers.EMPTY),
          TypeTree.build("pkg.Clazz.MEMBER_2").withPrefix(Space.SINGLE_SPACE),
          null);
        assertThat(style.addImport(List.of(import1, import2), importToAdd, null, Collections.emptyList()))
          .containsExactlyInAnyOrder(import1, import1, new JRightPadded<>(importToAdd, Space.EMPTY, Markers.EMPTY));
    }

What did you expect to see?

containsExactlyInAnyOrder(import1, import1, new JRightPadded<>(importToAdd, Space.EMPTY, Markers.EMPTY))

What did you see instead?

containsExactlyInAnyOrder(import1, import1)

What is the full stack trace of any errors you encountered?

Are you interested in contributing a fix to OpenRewrite?