Auto merge of #116310 - Enselic:check_fn_args_move_size, r=oli-obk

rustc_monomorphize: Introduce check_fn_args_move_size()

This is in preparation of improving diagnostics of "large moves into functions", a.k.a. passing args.

Note: This PR consists of two self-contained commits that can be reviewed independently.

For rust-lang/rust#83518

Also see https://rust-lang.zulipchat.com/#narrow/stream/182449-t-compiler.2Fhelp/topic/arg.20Spans.20for.20TerminatorKind.3A.3ACall.3F

r? `@oli-obk` who is E-mentor