[red-knot] Remove a parameter from the symbol_by_id() query

[AlexWaygood]

Salsa queries are more performant when they have fewer parameters, so this might lead to a performance improvement

[MichaReiser]

I like this better even if it doesn't improve perf because it moves the computation closer to where it's needed and makes it more lazy. It should also remove the symbol_table dependency for the query calling symbol which is nice.

[AlexWaygood]

no impact on perf :-( https://codspeed.io/astral-sh/ruff/branches/alex%2Fdunder-slots-arg

but yeah, as you say, a nice small change anyway :-)