Certain Azure SAS tokens are sanitized incorrectly by the SDK

[fcofdez]

After introducing #86135 the underlying Azure SDK sanitizes incorrectly certain SAS tokens, preventing the correct authentication against the Azure storage service.

[elasticmachine]

Pinging @elastic/es-distributed (Team:Distributed)

[fcofdez]

This seems to affect to SAS tokens that are prefixed with ?. During the SAS token parsing, the SDK cannot identify the first SAS token query param, removing it from the sanitized token, this produces an invalid signature.