gnu: kde-frameworks: Update to 5.42.0 resp. 5.42.1

gnu: kde-frameworks: Update to 5.42.0 resp. 5.42.1

Beside simple updating:
- Change all todo-comments for test-cases into "fixme" comments to make them
  easier to find.
- breeze-icons: Blacklist a test failing at build.kde.org, too.
- extra-cmake-modules: Patch out a vanised test-case.
- kfilemetadata: Can now run the test-suite uninstalled. Blacklist a failing
  test-case.
- kimageformats: No longer symlink plugins into ./bin for testing.
- ktexteditor: Remove now unused patch.
- plasma-framework: Add input kirigami
- sonnet: For testing set QT_QPA_PLATFORM=offscreen.

* gnu/packages/kde-frameworks.scm (attica, baloo, bluez-qt, kactivities,
  kactivities-stats, kapidox, karchive, kauth, kbookmarks, kcmutils, kcodecs,
  kcompletion, kconfig, kconfigwidgets, kcoreaddons, kcrash, kdbusaddons,
  kde-frameworkintegration, kdeclarative, kded, kdelibs4support,
  kdesignerplugin, kdesu, kdewebkit, kdnssd, kdoctools, kemoticons,
  kglobalaccel, kguiaddons, khtml, ki18n, kiconthemes, kidletime, kinit, kio,
  kirigami, kitemmodels, kitemviews, kjobwidgets, kjs, kjsembed, kmediaplayer,
  knewstuff, knotifications, knotifyconfig, kpackage, kparts, kpeople,
  kplotting, kpty, kross, krunner, kservice, ksyntaxhighlighting,
  ktextwidgets, kunitconversion, kwallet, kwayland, kwindowsystem, kxmlgui,
  kxmlrpcclient, modemmanager-qt, networkmanager-qt, oxygen-icons,
  prison, solid, threadweaver): Update to 5.42.0.
  (kwidgetsaddons): Update to 5.42.1.
  (breeze-icons): Update to 5.42.0. [#:phases]<disable-failing-test> New
  phase.
  (extra-cmake-modules): Update to 5.42.0.
  [#:phases]<post-5.42.0-release-fix>: New phase.
  (kfilemetadata): Update to 5.42.0. [#:phases]: No longer move check behind
  install. [#:phases]<check-setup> Remove. [#:phase]<disable-failing-test> New
  phase.
  (kimageformats): Update to 5.42.0. [#:phases]<check-setup>: No longer
  symlink plugins into ./bin.
  (ktesteditor)[source]: Remove patch.
  (plasma-framework)[inputs]: Add  kirigami
  (sonnet): Update to 5.42.0. [#:phases]<check-setup> New phase.
* gnu/packages/patches/ktexteditor-5.39.0-autotests-dependencies.patch:
  Remove file.
* gnu/local.mk (dist_patch_DATA): Remove it.