Search: Number filter and histogram when a free text search is applied

**Is your feature request related to a problem? Please describe.**
When user has already typed in a text for search(eg : 'av' or 'sscx'), the number filter gets updated. The range, missing values count, histogram etc are modified to range of result from the free text search. This may confuse a user when after applying free text search the column becomes empty. In that case the number filter fields all becomes zero or blank.

**Describe the solution you'd like**
We can hide the number filter, if the column is no longer filterable. Or we can investigate and find a better flow that is less confusing to the user.

**Describe alternatives you've considered**
A clear and concise description of any alternative solutions or features you've considered.

**Additional context**
Add any other context or screenshots about the feature request here.

No files or tests are named. Start by reproducing the number-filter behavior after applying a free-text search, including a search that leaves the column empty; define the intended behavior for the range, missing-value count, and histogram before locating the relevant UI entry point. Done means the number filter no longer presents confusing zero or blank values when the column is not filterable.

Written by the indexing model from the issue text.