Cleanups in unstable tests in I-builds

[akurtakov]

Use DisplayHelper to delay checks so listener changes can propagate. Remove unused variables.

[eclipse-platform-bot]

This pull request changes some projects for the first time in this development cycle.
Therefore the following files need a version increment:

tests/org.eclipse.search.tests/META-INF/MANIFEST.MF

An additional commit containing all the necessary changes was pushed to the top of this PR's branch. To obtain these changes (for example if you want to push more changes) either fetch from your fork or apply the git patch.

Git patch

From 6bc10a440a6eb9f81e264ef4b144d76bf437e648 Mon Sep 17 00:00:00 2001
From: Eclipse Platform Bot <[email protected]>
Date: Wed, 30 Oct 2024 20:36:30 +0000
Subject: [PATCH] Version bump(s) for 4.34 stream


diff --git a/tests/org.eclipse.search.tests/META-INF/MANIFEST.MF b/tests/org.eclipse.search.tests/META-INF/MANIFEST.MF
index fc529157b0..70fe03f11c 100644
--- a/tests/org.eclipse.search.tests/META-INF/MANIFEST.MF
+++ b/tests/org.eclipse.search.tests/META-INF/MANIFEST.MF
@@ -2,7 +2,7 @@ Manifest-Version: 1.0
 Bundle-ManifestVersion: 2
 Bundle-Name: %pluginName
 Bundle-SymbolicName: org.eclipse.search.tests;singleton:=true
-Bundle-Version: 3.11.500.qualifier
+Bundle-Version: 3.11.600.qualifier
 Bundle-Activator: org.eclipse.search.tests.SearchTestPlugin
 Bundle-Vendor: %providerName
 Bundle-Localization: plugin
-- 
2.47.0

Further information are available in Common Build Issues - Missing version increments.

[github-actions]

Test Results

 1 821 files  ±0   1 821 suites  ±0   1h 59m 54s ⏱️ + 11m 1s
 7 724 tests ±0   7 496 ✅ ±0  228 💤 ±0  0 ❌ ±0 
24 333 runs  ±0  23 586 ✅ ±0  747 💤 ±0  0 ❌ ±0 

Results for commit f3e376c. ± Comparison against base commit 2521210.