Migrate org.eclipse.jface.tests to JUnit 5

[vogella]

Migrate remaining org.eclipse.jface.tests to JUnit 5

[github-actions]

Test Results

 1 638 files   - 1 380   1 638 suites   - 1 380   44m 31s ⏱️ - 1h 38m 33s
 5 232 tests  - 2 997   5 192 ✅  - 2 789   40 💤  - 208  0 ❌ ±0 
14 640 runs   - 8 871  14 490 ✅  - 8 230  150 💤  - 641  0 ❌ ±0 

Results for commit 2cfa6af. ± Comparison against base commit 8567247.

This pull request removes 2997 tests.

AllTests AllActionTests ContributionItemTest ‑ testForceModeText
AllTests AllActionTests ContributionItemTest ‑ testParentLink
AllTests AllActionTests CoolBarManagerTest ‑ testResetItemOrderBug293433
AllTests AllActionTests MenuManagerTest ‑ testAddingConcreteItemToMenuWithNoConcreteVisibleItems
AllTests AllActionTests MenuManagerTest ‑ testDisposedMenuIsDirty
AllTests AllActionTests MenuManagerTest ‑ testEmptyMenuManagerNPE
AllTests AllActionTests MenuManagerTest ‑ testMenuWithNoConcreteVisibleItemsIsHidden
AllTests AllActionTests ToolBarManagerTest ‑ testActionImagesAreSet
AllTests AllActionTests ToolBarManagerTest ‑ testControlContributionIsSet
AllTests AllActionTests ToolBarManagerTest ‑ testCreateControlWhenParentNull
…

♻️ This comment has been updated with latest results.