[Test] [Windows] test_LocationListener_ProgressListener_cancledLoad is flaky

[fedejeanne]

Describe the bug
The test org.eclipse.swt.tests.junit.Test_org_eclipse_swt_browser_Browser.test_LocationListener_ProgressListener_cancledLoad() fails intermittently in GH actions (probably also in CI builds)

Unexpected event fired. 
LocationChanging (should be true): true
LocationChanged unexpectedly (should be false): true
ProgressChanged unexpectedly (should be false): true

	at org.junit.Assert.fail(Assert.java:89)
	at org.junit.Assert.assertTrue(Assert.java:42)
	at org.eclipse.swt.tests.junit.Test_org_eclipse_swt_browser_Browser.test_LocationListener_ProgressListener_cancledLoad(Test_org_eclipse_swt_browser_Browser.java:727)
	at java.base/java.lang.reflect.Method.invoke(Method.java:580)

Environment:

1. Select the platform(s) on which the behavior is seen:

• • All OS
• • Windows
• • Linux
• • macOS

[fedejeanne]

Might have the same root cause as #1843