Rollup merge of #104483 - oli-obk:santa-clauses-make-goals, r=compiler-errors

Convert predicates into Predicate in the Obligation constructor

instead of having almost all callers do that.

This reduces a bit of boilerplate, and also paves the way for my work towards https://github.com/rust-lang/compiler-team/issues/531 (as it makes it easier to accept both goals and clauses where right now it only accepts predicates).

compiler/rustc_lint/src/opaque_hidden_inferred_bound.rs

@@ -108,6 +108,7 @@ impl<'tcx> LateLintPass<'tcx> for OpaqueHiddenInferredBound {
                 // then we must've taken advantage of the hack in `project_and_unify_types` where
                 // we replace opaques with inference vars. Emit a warning!
                 if !infcx.predicate_must_hold_modulo_regions(&traits::Obligation::new(
+                    cx.tcx,
                     traits::ObligationCause::dummy(),
                     cx.param_env,
                     assoc_pred,