Potential Dangling Pointers in Function

As discussed in [PR #3729](https://github.com/acts-project/acts/pull/3729#discussion_r1829372523), there is a potential issue with storing addresses of loop variables in the function, which could lead to dangling pointers if gets modified or goes out of scope. Addressing this issue would involve major changes in several parts of the ACTS project and is out of scope for PR #3729. This issue is opened to track the work required to resolve this in a future PR.\n\nRequester: @CarloVarni