devel/qtcreator: Really fix build with LLVM 19

Clang >= 19.1.0-rc1 enables C++17 relaxed template template argument
matching by default. The workaround in qtcreator before this was the
case is now causing build failures.

Add upstream patch to fix build of the clang-format plugin with
clang-format19.

MFH: 2024Q4
(cherry picked from commit af073c18a31257e36538a52e2e7ebdf900e0d888)