Bug: Prevent "[" and "]" from being added to aliases and hidden ids on save

• Type: Bug
• Status: Verified
• Resolution: Unresolved
• Affects Version/s: Master
• Fix Version/s: None
• Component/s: Search Infrastructure
• Labels: None
• Story Points: 2
• Epic Link: Search Tuning: Result Rankings
• Sprint: Search | S03 Sprint 1, Search | S03 Sprint 2 | 7/8-26

Currently, aliases are adding "[" and "]" to the first and last alias on save.

The issue seems to be happening between when the ranking document is saved to the indexer and read. This also causes an issue with the `blockedIds` being saved.

The arrays are accurate when translating from ranking to document here: https://github.com/arboliveira/liferay-portal/blob/LPS-89524_Search_Tuning_Result_Rankings/modules/apps/portal-search/portal-search-ranking-web/src/main/java/com/liferay/portal/search/ranking/web/internal/index/RankingToDocumentTranslatorImpl.java#L39-L47

But when translating from document to ranking the values are returned as an array with a single item like `[[item1, item2]]` here: https://github.com/arboliveira/liferay-portal/blob/LPS-89524_Search_Tuning_Result_Rankings/modules/apps/portal-search/portal-search-ranking-web/src/main/java/com/liferay/portal/search/ranking/web/internal/index/DocumentToRankingTranslatorImpl.java#L45-L49 (edited)