ESQL: whitespaces in quoted index expressions in FROM are parsed wrongly #129768
Description
Example:
FROM "index1, index2"
->
{"error":{"root_cause":[{"type":"index_not_found_exception","reason":"no such index [ index2]"...
To avoid, one has to write
FROM "index1,index2"
which is unexpected as the whitespace is fine when not using quotes at all, i.e. FROM index1, index2.