[V3 Alias] F-strings don't work in alias

# Command bugs
#### Command name

`[p]alias global add` (possibly `[p]alias add` too)
#### What cog is this command from?
alias
#### What were you expecting to happen?
The eval to run as normal
#### What actually happened?
It just responds with nothing
#### How can we reproduce this issue?
Create an alias for an eval, make sure that the eval has an f-string in it. Then, try to run the alias.

Start by reproducing the problem with the `[p]alias global add` command and an eval containing an f-string, then inspect the alias cog's handling of evals. Done means the alias runs the eval normally when it contains an f-string, with the related alias behavior covered by the project's tests.

Written by the indexing model from the issue text.