CLSA-2026-1777544437 webkit2gtk3: Fix of 35 CVEs

Rebase to webkitgtk 2.52.3 to address WebKitGTK security advisories WSA-2026-0001 and WSA-2026-0002 matches RHSA-2026:9692. - Drop all CVE-2025- backport patches Patch100..Patch112; the fixes are included in 2.52.3 upstream. - Drop fix-missing-typename.patch: target source file was removed...