#1596: [Win32] Drawing produces unsymmetric results without swt.autoScale=false for 4k monitor with zooming

[tmssngr]

When drawing a vertical line at x == 1 with 200% zoom level (HiDPI),
MacOS draws it on the physical pixel coordinates 2 and 3 while on
Windows (with the existing code) it was drawn at 1 and 2.

In other words: the existing code drew lines 1 pixel too far left/top.
This commit should resolve this.

[github-actions]

Test Results

   382 files   -   101     382 suites   - 101   8m 8s ⏱️ -30s
 4 060 tests  -    35   4 049 ✅  -    36   6 💤  -  1  5 ❌ +2 
12 112 runs   - 4 061  12 066 ✅  - 4 014  41 💤  - 49  5 ❌ +2 

For more details on these failures, see this check.

Results for commit bd0b255. ± Comparison against base commit 266cc26.

This pull request removes 35 tests.

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

This pull request skips 2 tests.

org.eclipse.swt.tests.junit.Test_org_eclipse_swt_browser_Browser ‑ test_Constructor_multipleInstantiationsInDifferentThreads[browser flags: 0]
org.eclipse.swt.tests.junit.Test_org_eclipse_swt_widgets_Button ‑ test_traverseCheckButton

♻️ This comment has been updated with latest results.