Calls to default_action_handler with length == 0 #48
Description
I've noticed that in several grammars there is calls to default_action_handler with length == 0 (see bellow list) which doesn't seems to make sense because nothing can be done.
Also some calls to default_action_handler doesn't contain any nodes[length-1].state()->transitions->reduced_symbol .
Now testing lua.g test.lua
default_handler_counters = call : 699, zero = 42
----
Now testing carbon-lang.g prelude.carbon
default_handler_counters = call : 9743, zero = 302
----
Now testing postgresql-16.g test.sql
default_handler_counters = call : 20521, zero = 4919
----
Now testing lsl_ext.g test.lsl
default_handler_counters = call : 9109, zero = 3
----
Now testing bison.g carbon-lang.y
default_handler_counters = call : 1365, zero = 230
----
Now testing javascript-core.g test.js
default_handler_counters = call : 4295, zero = 0
----
Now testing cparser.g test.c
default_handler_counters = call : 11923, zero = 0
----
Now testing java11.g test.java
default_handler_counters = call : 7884, zero = 0
----
Now testing rust.g test.rs
default_handler_counters = call : 2558, zero = 208
----
Now testing gringo-ng.g test.clingo
default_handler_counters = call : 732, zero = 13
----
Now testing ada-adayacc.g test.adb
default_handler_counters = call : 364, zero = 85