dev-qt/qtwebengine: import glibc-2.41 crash fix from chromium

qtwebengine appears affected as well, reproduced the crash on
imgur's main page by scrolling in qutebrowser. Haven't tested
the patch myself but it appears to works fine for qtwebengine
according to Chiitoo.

Bug: https://bugs.gentoo.org/949654
Signed-off-by: Ionen Wolkens <ionen@gentoo.org>

dev-qt/qtwebengine/files/qtwebengine-6.8.2-glibc2.41.patch

@@ -0,0 +1,20 @@
+https://bugs.gentoo.org/949654
+
+Quick downstream fix for now. Hasn't been sent to upstream(s) yet
+as of the writing of this, but believe it should happen soon.
+
+From 6c7a3a3a733cf33e9355f497815700e5e26e7c3d Mon Sep 17 00:00:00 2001
+From: Mike Lothian <mike@fireburn.co.uk>
+Date: Wed, 12 Feb 2025 13:52:01 +0000
+Subject: [PATCH] Test fix
+--- a/src/3rdparty/chromium/sandbox/linux/seccomp-bpf-helpers/syscall_parameters_restrictions.cc
++++ b/src/3rdparty/chromium/sandbox/linux/seccomp-bpf-helpers/syscall_parameters_restrictions.cc
+@@ -238,7 +238,7 @@ ResultExpr RestrictMmapFlags() {
+   // TODO(davidung), remove MAP_DENYWRITE with updated Tegra libraries.
+   const uint64_t kAllowedMask = MAP_SHARED | MAP_PRIVATE | MAP_ANONYMOUS |
+                                 MAP_STACK | MAP_NORESERVE | MAP_FIXED |
+-                                MAP_DENYWRITE | MAP_LOCKED |
++                                MAP_DENYWRITE | MAP_LOCKED | MAP_DROPPABLE |
+                                 kArchSpecificAllowedMask;
+   const Arg<int> flags(3);
+   return If((flags & ~kAllowedMask) == 0, Allow()).Else(CrashSIGSYS());

dev-qt/qtwebengine/qtwebengine-6.8.2-r1.ebuild

@@ -110,6 +110,7 @@ PATCHES+=(
 	# add extras as needed here, may merge in set if carries across versions
 	"${FILESDIR}"/${PN}-6.8.1-aarch64-xnnpack.patch
 	"${FILESDIR}"/${PN}-6.8.1-cstdint.patch
+	"${FILESDIR}"/${PN}-6.8.2-glibc2.41.patch
 )
 
 python_check_deps() {