test_abstractPart_resizeActive fails with 2026-12

Likely something was changed in the Platform with https://github.com/eclipse-simrel/simrel.build/commit/38ed8d6f352bdaa81d8e8fb65dcbb00654f5e130, causing the page layout to now have a different size.

```
org.opentest4j.AssertionFailedError: expected: but was:
at org.junit.jupiter.api.AssertionFailureBuilder.build(AssertionFailureBuilder.java:151)
at org.junit.jupiter.api.AssertionFailureBuilder.buildAndThrow(AssertionFailureBuilder.java:132)
at org.junit.jupiter.api.AssertEquals.failNotEqual(AssertEquals.java:197)
at org.junit.jupiter.api.AssertEquals.assertEquals(AssertEquals.java:182)
at org.junit.jupiter.api.AssertEquals.assertEquals(AssertEquals.java:177)
at org.junit.jupiter.api.Assertions.assertEquals(Assertions.java:1145)
at org.eclipse.wb.tests.designer.core.AbstractJavaTest.assertEditor(AbstractJavaTest.java:273)
at org.eclipse.wb.tests.designer.rcp.RcpModelTest.assertEditor(RcpModelTest.java:126)
at org.eclipse.wb.tests.designer.rcp.model.rcp.PageLayoutTest.test_abstractPart_resizeActive(PageLayoutTest.java:1206)
at java.base/java.lang.reflect.Method.invoke(Method.java:565)
at org.eclipse.wb.tests.designer.core.model.parser.AbstractJavaInfoTest$JavaInfoExtension.interceptTestMethod(AbstractJavaInfoTest.java:88)
at java.base/java.util.ArrayList.forEach(ArrayList.java:1604)
at java.base/java.util.ArrayList.forEach(ArrayList.java:1604)
```

The `CTabFolder` created in this test used to have a width of 585, which is now 592 and thus causing the ratios to be off. Not sure if this is caused by an SWT or an UI change.

Inizia da PageLayoutTest.test_abstractPart_resizeActive in PageLayoutTest.java:1206 e analizza la chiamata assertEditor che fallisce e le dimensioni di CTabFolder da essa generate. Confronta il rapporto atteso di 0.47 con il risultato osservato di 0.46, quindi esegui questo test per verificare il comportamento sulla piattaforma o configurazione UI interessata. Il lavoro è completato quando il test riflette il comportamento di layout previsto e passa in modo affidabile.

Scritto dal modello di indicizzazione a partire dal testo della issue.