Rollup merge of #113285 - GuillaumeGomez:display-long-inline-cfg, r=notriddle

[rustdoc] Fix display of long inline cfg labels

Fixes #87957.
Fixes #112880.

Before:

![Screenshot from 2023-07-03 13-25-47](https://github.com/rust-lang/rust/assets/3050060/401e2c6b-2cfd-4ae3-9d15-b5e1dfec4201)

After:

![Screenshot from 2023-07-03 13-24-49](https://github.com/rust-lang/rust/assets/3050060/e42a34a8-bf60-409d-8a0c-1669d09e7e1e)

r? `@notriddle`

1 files changed, 9 insertions, 0 deletions

diff --git a/tests/rustdoc-gui/src/test_docs/lib.rs b/tests/rustdoc-gui/src/test_docs/lib.rs
index c040fa02dff..ecf3a7cc147 100644
--- a/tests/rustdoc-gui/src/test_docs/lib.rs
+++ b/tests/rustdoc-gui/src/test_docs/lib.rs
@@ -507,3 +507,12 @@ pub mod fields {
         },
     }
 }
+
+pub mod cfgs {
+    #[doc(cfg(all(
+        any(not(feature = "appservice-api-c"), not(feature = "appservice-api-s")),
+        any(not(feature = "client"), not(feature = "server")),
+    )))]
+    /// Some docs.
+    pub mod cfgs {}
+}