Use line ranges in compare editor by default

[iloveeclipse]

See eclipse-platform/eclipse.platform.ui#3776

[github-actions]

Test Results

    51 files   -   3      51 suites   - 3   35m 39s ⏱️ - 1m 26s
 4 546 tests ±  0   4 522 ✅ ±  0   23 💤 ±0  1 ❌ ±0 
12 081 runs   - 153  11 921 ✅  - 153  159 💤 ±0  1 ❌ ±0 

For more details on these failures, see this check.

Results for commit 021e155. ± Comparison against base commit 2776d6f.

[iloveeclipse]

artifacts/test-results-ubuntu-latest/resources/tests/org.eclipse.core.tests.resources/target/surefire-reports/TEST-org.eclipse.core.tests.resources.AutomatedResourceTests.xml [took 0s]
project 'P/a06e67f9e71e00111d63b712e335a2fb' is not expected to have nature: org.eclipse.core.tests.resources.earthNature
org.opentest4j.AssertionFailedError: project 'P/a06e67f9e71e00111d63b712e335a2fb' is not expected to have nature: org.eclipse.core.tests.resources.earthNature
	at org.eclipse.core.tests.resources.NatureTest.assertDoesNotHaveNature(NatureTest.java:125)
	at org.eclipse.core.tests.resources.NatureTest.testBug297871(NatureTest.java:311)
	at java.base/java.lang.reflect.Method.invoke(Method.java:580)
	at java.base/java.util.ArrayList.forEach(ArrayList.java:1596)
	at java.base/java.util.ArrayList.forEach(ArrayList.java:1596)

!ENTRY org.eclipse.core.tests.resources 1 0 2026-03-13 14:21:49.577
!MESSAGE [NatureTest.testBug297871] setUp

!ENTRY org.eclipse.core.resources 2 2 2026-03-13 14:21:49.582
!MESSAGE Save operation warnings.
!SUBENTRY 1 org.eclipse.core.resources 2 234 2026-03-13 14:21:49.582
!MESSAGE The project description file (.project) for 'a06e67f9e71e00111d63b712e335a2fb' was missing.  This file contains important information about the project.  A new project description file has been created, but some information about the project may have been lost.

!ENTRY org.eclipse.core.tests.resources 1 0 2026-03-13 14:21:49.586
!MESSAGE [NatureTest.testBug297871] tearDown 

Test failure above is unrelated, only on Linux/Ubuntu machine, so must be unstable test.

[HannesWell]

While I find the new default visually appealing, it has one major functional draw-back:
For local changes the 'move'/undo buttons are not available:

Single line connection:

'Range' connection:

Without that the diff-view loses a tool, that at least I consider very important.
I assume these buttons can be added even for 'Range' connections, but until then I'm against making it the default.