Revert "platform_configs: remove two u2204 tests"

Ubuntu 24.04 GNOME X11 still has too many flaky issues in our
CI, which blocks integrations too much.

This reverts commit e2e25e8a66.

Pick-to: 6.10 6.9 6.8
Task-number: QTBUG-137909
Change-Id: Ifcb56d0172b7bd0e66d1fe6e764ea6643b8e4834
Reviewed-by: Axel Spoerl <axel.spoerl@qt.io>

coin/platform_configs/cmake_platforms.yaml

@@ -27,6 +27,19 @@ Configurations:
         'VCPKG_HOST_TRIPLET=x64-linux-qt',
         'VCPKG_TARGET_TRIPLET=x64-linux-qt',
     ]
+# Test on Ubuntu 22.04 X11
+-
+    Id: 'ubuntu-22.04-developer-build-x11-tests'
+    Template: 'qtci-linux-Ubuntu-22.04-x86_64-51'
+    Compiler: 'GCC'
+    Features: ['Sccache', 'TestOnly']
+    Platform dependency: 'ubuntu-22.04-developer-build'
+-
+    Id: 'ubuntu-22.04-x11-tests'
+    Template: 'qtci-linux-Ubuntu-22.04-x86_64-51'
+    Compiler: 'GCC'
+    Features: ['Sccache', 'TestOnly']
+    Platform dependency: 'ubuntu-22.04'
 # Build on Ubuntu 24.04 ARM64 Wayland and test on offscreen and Wayland later
 -
     Id: 'ubuntu-24.04-arm64-developer-build'

coin/platform_configs/precheck.yaml

@@ -4,7 +4,7 @@ Include: [
   cmake_platforms.yaml: [
     "ubuntu-22.04",
     "ubuntu-22.04-developer-build",
-    "ubuntu-24.04-x64-developer-build-x11-tests",
+    "ubuntu-22.04-developer-build-x11-tests",
     "windows-11_23H2-msvc2022-developer-build",
     "windows-11_24H2-msvc2022-developer-build",
     "ios-universal"