* Revert "Revert "Elasticsearch: add frozen indices search support (#27472)" (#27726)"
This reverts commit 4c7131425ba048c648435410f2153d4d85f20304.
* Make label width a bit more consistent
* Add documentation for X-Pack & Frozen Indices support in Elasticsearch
* Change UI & docs casing
* create default empty dataframe
* Remove backticks and simplify regex
* small doc improvement