[webkitpy] Detection of GTK4 is broken

https://bugs.webkit.org/show_bug.cgi?id=261503

Reviewed by Adrian Perez de Castro.

The name of the current binary for the gtk4 library is different,
update the method to actually find all library binaries.

 * Tools/Scripts/webkitpy/port/gtk.py:
 (GtkPort._is_gtk4_build):
 * Tools/Scripts/webkitpy/port/gtk_unittest.py:
 (GtkPortTest.test_gtk4_expectations_binary_only):
 (GtkPortTest.test_gtk_expectations_both_binaries):

Canonical link: https://commits.webkit.org/267946@main

Tools/Scripts/webkitpy/port/gtk.py

@@ -199,13 +199,13 @@ def run_minibrowser(self, args):
     def _is_gtk4_build(self):
         try:
             libdir = self._build_path('lib')
-            candidates = self._filesystem.glob(os.path.join(libdir, 'libwebkit2gtk-*.so'))
+            candidates = self._filesystem.glob(os.path.join(libdir, 'libwebkit*gtk-*.so'))
             if not candidates:
                 return False
             if len(candidates) > 1:
                 _log.warning("Multiple WebKit2GTK libraries found. Skipping GTK4 detection.")
                 return False
-            return os.path.basename(candidates[0]) == 'libwebkit2gtk-5.0.so'
+            return os.path.basename(candidates[0]) == 'libwebkitgtk-6.0.so'
 
         except (webkitpy.common.system.executive.ScriptError, IOError, OSError):
             return False

Tools/Scripts/webkitpy/port/gtk_unittest.py

@@ -102,7 +102,7 @@ def test_default_upload_configuration(self):
     def test_gtk4_expectations_binary_only(self):
         port = self.make_port()
         port._filesystem = MockFileSystem({
-            "/mock-build/lib/libwebkit2gtk-5.0.so": ""
+            "/mock-build/lib/libwebkitgtk-6.0.so": ""
         })
         with OutputCapture() as _:
             self.assertEqual(port.expectations_files(),
@@ -129,7 +129,7 @@ def test_gtk_expectations_both_binaries(self):
         port = self.make_port()
         port._filesystem = MockFileSystem({
             "/mock-build/lib/libwebkit2gtk-4.0.so": "",
-            "/mock-build/lib/libwebkit2gtk-5.0.so": ""
+            "/mock-build/lib/libwebkitgtk-6.0.so": ""
         })
 
         with OutputCapture() as captured: