brew_installer: fail if services or link fails.

This is the more expected behaviour and more consistent with e.g.
`brew bundle check`.

lib/bundle/brew_installer.rb

@@ -43,13 +43,18 @@ def install(preinstall: true, no_upgrade: false, verbose: false, force: false)
       else
         true
       end
+      result = install_result
 
       if installed?
-        service_change_state!(verbose:) if install_result
-        link_change_state!(verbose:)
+        if install_result
+          service_result = service_change_state!(verbose:)
+          result &&= service_result
+        end
+        link_result = link_change_state!(verbose:)
+        result &&= link_result
       end
 
-      install_result
+      result
     end
 
     def install_change_state!(no_upgrade:, verbose:, force:)