cargo: Bump rustc to 1.89 (#36818)

Update Rustc to 1.89.

Reviewable by commit.

Leftover work:
- #37330 
- #38777

---------

Signed-off-by: sagudev <16504129+sagudev@users.noreply.github.com>
Co-authored-by: sagudev <16504129+sagudev@users.noreply.github.com>

components/script_bindings/realms.rs

@@ -47,11 +47,11 @@ impl<'a> From<&'a JSAutoRealm> for InRealm<'a> {
 }
 
 impl InRealm<'_> {
-    pub fn already(token: &AlreadyInRealm) -> InRealm {
+    pub fn already(token: &AlreadyInRealm) -> InRealm<'_> {
         InRealm::Already(token)
     }
 
-    pub fn entered(token: &JSAutoRealm) -> InRealm {
+    pub fn entered(token: &JSAutoRealm) -> InRealm<'_> {
         InRealm::Entered(token)
     }
 }