Auto merge of #96139 - erikdesjardins:revertinl2, r=Mark-Simulacrum

Revert: Make TLS __getit #[inline(always)] on non-Windows

re #96132

r? `@Mark-Simulacrum`

Author: bors

library/std/src/thread/local.rs

@@ -178,7 +178,7 @@ macro_rules! thread_local {
 macro_rules! __thread_local_inner {
     // used to generate the `LocalKey` value for const-initialized thread locals
     (@key $t:ty, const $init:expr) => {{
-        #[cfg_attr(not(windows), inline(always))] // see comments below
+        #[cfg_attr(not(windows), inline)] // see comments below
         #[deny(unsafe_op_in_unsafe_fn)]
         unsafe fn __getit(
             _init: $crate::option::Option<&mut $crate::option::Option<$t>>,
@@ -312,7 +312,7 @@ macro_rules! __thread_local_inner {
             // gets the pessimistic path for now where it's never inlined.
             //
             // The issue of "should enable on Windows sometimes" is #84933
-            #[cfg_attr(not(windows), inline(always))]
+            #[cfg_attr(not(windows), inline)]
             unsafe fn __getit(
                 init: $crate::option::Option<&mut $crate::option::Option<$t>>,
             ) -> $crate::option::Option<&'static $t> {