gnu: gcc-toolchain: Do not use gcc-final.

* gnu/packages/commencement.scm (gcc-toolchain): Bind to the default
gcc-toolchain-11 being consitent with others.
(gcc-toolchain-11): Make it from gcc-11.
(gcc-toolchain-aka-gcc): Bind to gcc-toolchain.

gnu/packages/commencement.scm

@@ -3616,8 +3616,6 @@ is the GNU Compiler Collection.")
                 ("libc-debug" ,libc "debug")
                 ("libc-static" ,libc "static"))))))
 
-(define-public gcc-toolchain
-  (make-gcc-toolchain gcc-final))
 
 (define-public gcc-toolchain-4.8
   (make-gcc-toolchain gcc-4.8))
@@ -3644,7 +3642,7 @@ is the GNU Compiler Collection.")
   (make-gcc-toolchain gcc-10))
 
 (define-public gcc-toolchain-11
-  gcc-toolchain)
+    (make-gcc-toolchain gcc-11))
 
 (define-public gcc-toolchain-12
   (make-gcc-toolchain gcc-12))
@@ -3652,10 +3650,14 @@ is the GNU Compiler Collection.")
 (define-public gcc-toolchain-13
   (make-gcc-toolchain gcc-13))
 
+;; The default GCC
+(define-public gcc-toolchain
+  gcc-toolchain-11)
+
 (define-public gcc-toolchain-aka-gcc
   ;; It's natural for users to try "guix install gcc".  This package
   ;; automatically "redirects" them to 'gcc-toolchain'.
-  (deprecated-package "gcc" gcc-toolchain-11))
+  (deprecated-package "gcc" gcc-toolchain))
 
 
 (define-public gdc-toolchain-10