[perl #73192] [BUG] The \123 form doesn't give an error anymore in strings in Rakudo

[Carl Mäsak]

# New Ticket Created by  "Carl Mäsak" 
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<colomon> S02-literals/char-by-number.t has that in a eval_dies_ok
test.... master just seems to shrug and get on with life instead of
dying.
<colomon> rakudo: say "\123"
<p6eval> rakudo 588a34: OUTPUT«\123␤»
<m-locks> oh noes
<masak> alpha: "\123"
<p6eval> alpha 30e0ed: OUTPUT«\123 form deprecated, use \o123 instead [...]
* masak submits rakudobug