Auto merge of #126450 - madsmtm:promote-mac-catalyst, r=Mark-Simulacrum

Promote Mac Catalyst targets to Tier 2, and ship with rustup

Promote the Mac Catalyst targets `x86_64-apple-ios-macabi` and `aarch64-apple-ios-macabi` to Tier 2, as per [the MCP](rust-lang/compiler-team#761) (see that for motivation and details).

These targets are now also distributed with rustup, although without the sanitizer runtime, as that currently has trouble building, see rust-lang/rust#129069.

Author: bors