Potential Undefined Behavior in Frida ASan

In asan_rt.rs, we're getting mutable references to `self` at various places, hereby creating aliases for mutable references.
This is not permitted in Rust and may break in the future, see here:
https://github.com/AFLplusplus/LibAFL/blob/97a83aba3bc6376786984efde3e4a968fe553068/libafl_frida/src/asan/asan_rt.rs#L1945C42-L1945C46
Instead, we probably need to store the runtime on the heap and keep a pointer to it (Rc, UnsafeCell, Pin, or something like that?)