Edge:evaluate deadlock fix

[amartya4256]

This PR cotributes to replicating the behaviour of Edge:evaluate as
it is in WebKit - it must not wait for the execution of script to obtain
the result, in case evaluate is called inside a WebView callback. This
PR also makes sure that OpenWindowListeners are execute
synchronously or asynchronously depending on if the
handleNewWindowRequested is called from the evaluate script. Moreover,
this enables all the tests which were failing because of Edge:evaluate
limitations.

contributes to
#1771 and
#1919

[github-actions]

Test Results

   539 files   -  6     539 suites   - 6   29m 55s ⏱️ -8s
 4 332 tests  - 37   4 322 ✅  - 35    9 💤  - 3  1 ❌ +1 
16 587 runs   - 37  16 483 ✅  - 31  103 💤  - 7  1 ❌ +1 

For more details on these failures, see this check.

Results for commit bda4169. ± Comparison against base commit 601136c.

This pull request removes 37 tests.

AllWin32Tests org.eclipse.swt.graphics.ImageWin32Tests ‑ testImageDataForDifferentFractionalZoomsShouldBeDifferent
AllWin32Tests org.eclipse.swt.graphics.ImageWin32Tests ‑ testImageShouldHaveDimesionAsPerZoomLevel
AllWin32Tests org.eclipse.swt.tests.win32.Test_org_eclipse_swt_dnd_DND ‑ testByteArrayTransfer
AllWin32Tests org.eclipse.swt.tests.win32.Test_org_eclipse_swt_dnd_DND ‑ testFileTransfer
AllWin32Tests org.eclipse.swt.tests.win32.Test_org_eclipse_swt_dnd_DND ‑ testHtmlTransfer
AllWin32Tests org.eclipse.swt.tests.win32.Test_org_eclipse_swt_dnd_DND ‑ testImageTransfer_fromCopiedImage
AllWin32Tests org.eclipse.swt.tests.win32.Test_org_eclipse_swt_dnd_DND ‑ testImageTransfer_fromImage
AllWin32Tests org.eclipse.swt.tests.win32.Test_org_eclipse_swt_dnd_DND ‑ testImageTransfer_fromImageData
AllWin32Tests org.eclipse.swt.tests.win32.Test_org_eclipse_swt_dnd_DND ‑ testImageTransfer_fromImageDataFromImage
AllWin32Tests org.eclipse.swt.tests.win32.Test_org_eclipse_swt_dnd_DND ‑ testRtfTransfer
…

♻️ This comment has been updated with latest results.

[fedejeanne]

I think this PR does 2 things, right?

1. It changes the strategy about how to execute callbacks by introducing the method executeAsynchronously(...)
2. It executes some new blocks of code asynchronously by using the new method

Would it be possible to split it in 2 different PRs? That way it would be possible to see for example which part of these changes (1. or 2.) fixes the tests and which part makes it easier to work with the code.

[fedejeanne]

I made an initial review, just a few minor comments regarding coding practices. I will test it later today, after these comments are addressed.

In general, it looks good. Thank you @amartya4256 !

[fedejeanne]

Test failure is unrelated #1843

[fedejeanne]

@amartya4256 please restore all my changes from ce62574 and improve the text of the comment. No need for a new method.

Done

[HeikoKlare]

This PR produced a regression regarding:

• Edge: Operation timed out on evaluate() #1919

While the root cause of that described issue led to a timeout before this PR, it now leads to a complete UI block from which the application does not recover.

Please have a look @amartya4256.

This is the according stack trace where it deadlocks:

Thread [main] (Suspended)	
	owns: RunnableLock  (id=43)	
	OS.PeekMessage(MSG, long, int, int, int) line: not available [native method]	
	Edge.processOSMessagesUntil(Supplier<Boolean>, Consumer<SWTException>, Display) line: 515	
	Edge.callAndWait(String[], ToIntFunction<IUnknown>) line: 288	
	Edge.evaluate(String) line: 920	
	Edge(WebBrowser).evaluate(String, boolean) line: 405	
	Browser.evaluate(String, boolean) line: 665	
	Browser.evaluate(String) line: 614	
	RichTextEditorConfiguration.customizeToolbar() line: 618	
	RichTextEditor$1.function(Object[]) line: 261	
	Edge.handleCallJava(int, long, long) line: 1014	
	0x000001d17c0cdb78.CallJava(int, long, long) line: not available	
	OS.DispatchMessage(MSG) line: not available [native method]	
	Display.readAndDispatch() line: 3725	
	Edge.processOSMessagesUntil(Supplier<Boolean>, Consumer<SWTException>, Display) line: 516	
	Edge.callAndWait(String[], ToIntFunction<IUnknown>) line: 288	
	Edge.evaluate(String) line: 920	
	Edge(WebBrowser).evaluate(String, boolean) line: 405	
	Browser.evaluate(String, boolean) line: 665	
	Browser.evaluate(String) line: 614	
	RichTextEditor$3.completed(ProgressEvent) line: 285	
	Edge.lambda$45() line: 1130	
	0x000001d17c0d4a28.run() line: not available	
	RunnableLock.run(Display) line: 40	
	Synchronizer.runAsyncMessages(boolean) line: 132	
	Display.runAsyncMessages(boolean) line: 4114	
	Display.readAndDispatch() line: 3730	
	RichTextEditorExample.main(String[]) line: 61