Rollup merge of #152625 - Alexendoo:lint-group-names, r=Kivooeo

Provide all lint group names to Clippy

Unblocks https://github.com/rust-lang/rust-clippy/pull/14689

compiler/rustc_lint/src/context.rs

@@ -154,6 +154,11 @@ pub fn get_lint_groups(&self) -> impl Iterator<Item = (&'static str, Vec<LintId>
             })
     }
 
+    /// Returns all lint group names, including deprecated/aliased groups
+    pub fn get_all_group_names(&self) -> impl Iterator<Item = &'static str> {
+        self.lint_groups.keys().copied()
+    }
+
     pub fn register_early_pass(
         &mut self,
         pass: impl Fn() -> EarlyLintPassObject + 'static + sync::DynSend + sync::DynSync,

src/tools/clippy/clippy_lints/src/cargo/lint_groups_priority.rs

@@ -135,7 +135,7 @@ pub fn check(cx: &LateContext<'_>) {
     {
         let mut rustc_groups = FxHashSet::default();
         let mut clippy_groups = FxHashSet::default();
-        for (group, ..) in unerased_lint_store(cx.tcx.sess).get_lint_groups() {
+        for group in unerased_lint_store(cx.tcx.sess).get_all_group_names() {
             match group.split_once("::") {
                 None => {
                     rustc_groups.insert(group);