CI: Disable sanitizer builds until we fix them

[akien-mga]

Added in #40994 but without recent rebase, so they don't pass currently.

[qarmin]

Error in CI shows that some commits between this PR branch and current 3.2 branch introduced leak

Direct leak of 72 byte(s) in 1 object(s) allocated from:
    #0 0x7f62d43d4bc8 in malloc (/lib/x86_64-linux-gnu/libasan.so.5+0x10dbc8)
    #1 0xf0103a3 in Memory::alloc_static(unsigned long, bool) core/os/memory.cpp:82
    #2 0xf0102a2 in operator new(unsigned long, char const*) core/os/memory.cpp:42
    #3 0x590910c in MutexPosix::create_func_posix(bool) drivers/unix/mutex_posix.cpp:52
    #4 0xf014a48 in Mutex::create(bool) core/os/mutex.cpp:43
    #5 0x144cc0b in OS_X11::initialize(OS::VideoMode const&, int, int) platform/x11/os_x11.cpp:124
    #6 0x15ba827 in Main::setup2(unsigned long) main/main.cpp:1269
    #7 0x15b54b6 in Main::setup(char const*, int, char**, bool) main/main.cpp:1213
    #8 0x143ec3b in main platform/x11/godot_x11.cpp:49
    #9 0x7f62d2eb20b2 in __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x270b2)

Which as blame shows:
https://github.com/godotengine/godot/blame/8d36b7206cf11607395e68f060f003223ae62a95/platform/x11/os_x11.cpp#L124

probably was caused by this commit #42341

Probably deleting in destructor this mutex will fix issue CC @pouleyKetchoupp

godot/platform/x11/os_x11.cpp

Line 124 in 8d36b72

events_mutex = Mutex::create();

[akien-mga]

I'll merge for now to fix CI, but this can be reactivated (remove the if: false) once the regression is fixed.