Auto merge of #15445 - Veykril:worl-symbols-traits, r=Veykril

fix: Fix `only_types` config filtering out traits from world symbols

It is a bit confusing that this apparently did not filter every trait out though...

Closes https://github.com/rust-lang/rust-analyzer/issues/15444
Closes https://github.com/rust-lang/rust-analyzer/issues/15200

crates/ide-db/src/symbol_index.rs

@@ -323,6 +323,8 @@ impl Query {
                             hir::ModuleDef::Adt(..)
                                 | hir::ModuleDef::TypeAlias(..)
                                 | hir::ModuleDef::BuiltinType(..)
+                                | hir::ModuleDef::TraitAlias(..)
+                                | hir::ModuleDef::Trait(..)
                         )
                     {
                         continue;

crates/ide/src/navigation_target.rs

@@ -175,8 +175,12 @@ impl TryToNav for FileSymbol {
 
         Some(NavigationTarget {
             file_id: full_range.file_id,
-            name: if self.is_alias { self.def.name(db)?.to_smol_str() } else { self.name.clone() },
-            alias: if self.is_alias { Some(self.name.clone()) } else { None },
+            name: self
+                .is_alias
+                .then(|| self.def.name(db))
+                .flatten()
+                .map_or_else(|| self.name.clone(), |it| it.to_smol_str()),
+            alias: self.is_alias.then(|| self.name.clone()),
             kind: Some(hir::ModuleDefId::from(self.def).into()),
             full_range: full_range.range,
             focus_range,