Don't use jansson for JSON encoding.

It has borken integer parsing

New patches:
    Revert-m4-Introduce-STABLE_ORDERING_JANSSON.patch
    Revert-Remove-virJSONValueNewStringLen.patch
    Revert-build-undef-WITH_JANSSON-for-SETUID_RPC_CLIENT.patch
    Revert-tests-qemucapsprobe-Fix-output-after-switching-to-.patch
    Revert-build-require-Jansson-if-QEMU-driver-is-enabled.patch
    Revert-util-jsoncompat-Stub-out-virJSONInitialize-when-co.patch
    Revert-Switch-from-yajl-to-Jansson.patch
    Revert-remote-daemon-Make-sure-that-JSON-symbols-are-prop.patch
    Revert-build-remove-references-to-WITH_YAJL-for-SETUID_RP.patch
    Revert-build-add-with-jansson.patch
    Revert-Remove-functions-using-yajl.patch
    Revert-build-switch-with-qemu-default-from-yes-to-check.patch
    Revert-tests-also-skip-qemuagenttest-with-old-jansson.patch
    Revert-util-avoid-symbol-clash-between-json-libraries.patch

Revert "Depend on libjansson4"

This reverts commit 42d718c7.

Revert "Use jansson instead of yajl"

This reverts commit d53b4b1d.

Closes: #906116