Auto merge of #78784 - Mark-Simulacrum:revert-77421, r=petrochenkov

Revert "Revert "resolve: Avoid "self-confirming" import resolutions in one more case""

Specifically, this reverts commit b20bce8ce5 from #77421 to fix #77586.

The lang team has decided that for the time being we want to avoid the breakage here (perhaps for a future edition; though almost certainly not the upcoming one), though a future PR may want to add a lint around this case (and perhaps others) which are unlikely to be readable code.

r? `@petrochenkov` to confirm this is the right way to fix #77586.

src/test/ui/imports/issue-62767.rs

@@ -1,3 +1,5 @@
+// check-pass
+
 // Minimized case from #62767.
 mod m {
     pub enum Same {
@@ -9,7 +11,7 @@ use m::*;
 
 // The variant `Same` introduced by this import is also considered when resolving the prefix
 // `Same::` during import validation to avoid effects similar to time travel (#74556).
-use Same::Same; //~ ERROR unresolved import `Same`
+use Same::Same;
 
 // Case from #74556.
 mod foo {
@@ -21,8 +23,8 @@ mod foo {
 }
 
 use foo::*;
-use bar::bar; //~ ERROR unresolved import `bar::bar`
-              //~| ERROR inconsistent resolution for an import
+use bar::bar;
+
 use bar::foobar;
 
 fn main() {}

src/test/ui/imports/issue-62767.stderr

@@ -1,21 +0,0 @@
-error: inconsistent resolution for an import
-  --> $DIR/issue-62767.rs:24:5
-   |
-LL | use bar::bar;
-   |     ^^^^^^^^
-
-error[E0432]: unresolved import `Same`
-  --> $DIR/issue-62767.rs:12:5
-   |
-LL | use Same::Same;
-   |     ^^^^ `Same` is a variant, not a module
-
-error[E0432]: unresolved import `bar::bar`
-  --> $DIR/issue-62767.rs:24:5
-   |
-LL | use bar::bar;
-   |     ^^^^^^^^ no `bar` in `foo::bar::bar`
-
-error: aborting due to 3 previous errors
-
-For more information about this error, try `rustc --explain E0432`.