Rollup merge of #92683 - jackh726:issue-92033, r=estebank

Suggest copying trait associated type bounds on lifetime error

Closes #92033

Kind of the most simple suggestion to make - we don't try to be fancy. Turns out, it's still pretty useful (the couple existing tests that trigger this error end up fixed - for this error - upon applying the fix).

r? ``@estebank``
cc ``@nikomatsakis``

compiler/rustc_middle/src/traits/mod.rs

@@ -285,6 +285,12 @@ pub enum ObligationCauseCode<'tcx> {
         trait_item_def_id: DefId,
     },
 
+    /// Checking that the bounds of a trait's associated type hold for a given impl
+    CheckAssociatedTypeBounds {
+        impl_item_def_id: DefId,
+        trait_item_def_id: DefId,
+    },
+
     /// Checking that this expression can be assigned where it needs to be
     // FIXME(eddyb) #11161 is the original Expr required?
     ExprAssignable,