Merge bitcoin/bitcoin#31592: ci: Run functional tests in msan task

fa0411e ci: Run functional tests in msan task (MarcoFalke)

Pull request description:

  Now that the CI machines have a bit more CPU, it seems good to run the functional tests as well under msan. (Also, bump the llvm minor version)

ACKs for top commit:
  TheCharlatan:
    ACK fa0411e

Tree-SHA512: 0dbb2b934485ed54b8caafb5bcd96ddef87088b148dab72a584f721c398bb7fda4095fb720b9ad602dc71f8f40a1e0f29e1b08b2879b78b90b29d46604df36c3

ci/test/00_setup_env_native_msan.sh

@@ -27,4 +27,3 @@ export BITCOIN_CONFIG="\
  -DAPPEND_CPPFLAGS='-U_FORTIFY_SOURCE' \
 "
 export USE_MEMORY_SANITIZER="true"
-export RUN_FUNCTIONAL_TESTS="false"

ci/test/01_base_install.sh

@@ -49,7 +49,7 @@ if [ -n "$PIP_PACKAGES" ]; then
 fi
 
 if [[ ${USE_MEMORY_SANITIZER} == "true" ]]; then
-  ${CI_RETRY_EXE} git clone --depth=1 https://github.com/llvm/llvm-project -b "llvmorg-19.1.0" /msan/llvm-project
+  ${CI_RETRY_EXE} git clone --depth=1 https://github.com/llvm/llvm-project -b "llvmorg-19.1.6" /msan/llvm-project
 
   cmake -G Ninja -B /msan/clang_build/ \
     -DLLVM_ENABLE_PROJECTS="clang" \