Forbid stray tokens in call index (#13036)

* Check for call_index

* fixes

* pallet ui test for weight attribute

* Update frame/support/procedural/src/pallet/parse/call.rs

Co-authored-by: Bastian Köcher <git@kchr.de>

* fix

* small fix

* wrong return type

* ...

* .

* final fix

* update .stderr

* commit

* udpate

* Update frame/support/procedural/src/pallet/parse/call.rs

Co-authored-by: Bastian Köcher <git@kchr.de>

* update .stderr

Co-authored-by: Bastian Köcher <git@kchr.de>