Enable creating an index "from_existing" #543

Job	Run time
Python 3.9 - hiredis [redis-stack 6.2.6-v9]	3m 8s
Python 3.9 - hiredis [redis-stack latest]	3m 12s
Python 3.9 - hiredis [redis-stack edge]	3m 34s
Python 3.9 - plain [redis-stack 6.2.6-v9]	5m 24s
Python 3.9 - plain [redis-stack latest]	9m 57s
Python 3.9 - plain [redis-stack edge]	2m 55s
Python 3.10 - hiredis [redis-stack 6.2.6-v9]	3m 21s
Python 3.10 - hiredis [redis-stack latest]	3m 3s
Python 3.10 - hiredis [redis-stack edge]	3m 26s
Python 3.10 - plain [redis-stack 6.2.6-v9]	2m 58s
Python 3.10 - plain [redis-stack latest]	4m 2s
Python 3.10 - plain [redis-stack edge]	3m 9s
Python 3.11 - hiredis [redis-stack 6.2.6-v9]	2m 56s
Python 3.11 - hiredis [redis-stack latest]	3m 14s
Python 3.11 - hiredis [redis-stack edge]	3m 44s
Python 3.11 - plain [redis-stack 6.2.6-v9]	3m 4s
Python 3.11 - plain [redis-stack latest]	5m 12s
Python 3.11 - plain [redis-stack edge]	2m 43s
	1h 9m 2s

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