fix[codegen]: fix raw_log() when topics are non-literals

[cyberthirst]

What I did

• fix for: incorrect topic logging in raw_log for non-literal expressions #3974

How I did it

• call unwrap on the topics

How to verify it

• added new tests

Commit message

this commit fixes codegen for the `raw_log()` builtin when the topics
are non-literals. `unwrap_location()` was not being called, so when the
topic expression is not a literal, the pointer to the variable was being
returned instead of the value of the variable.

Description for the changelog

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[cyberthirst]

is any caching of topics needed?