Rollup merge of #136806 - adwinwhite:cycle-in-pretty-print-rpitit, r=compiler-errors

Fix cycle when debug-printing opaque types from RPITIT

Extend #66594 to opaque types from RPITIT.

Before this PR, enabling debug logging like `RUSTC_LOG="[check_type_bounds]"` for code containing RPITIT produces a query cycle of `explicit_item_bounds`, as pretty printing for opaque type calls [it](https://github.com/rust-lang/rust/blob/d9a4a47b8b3dc0bdff83360cea2013200d60d49c/compiler/rustc_middle/src/ty/print/pretty.rs#L1001).

Author: jhpratt