[FEATURE] Autosuggest requiest count limitation

[dkd-kaehm]

Is your feature request related to a problem? Please describe.

If the standard EXT:solr templates are used and the auto-suggest function is enabled, the server may be overloaded with requests and become overwhelmed.

If the search input field has the focus and something is accidentally placed on the keyboard, causing a key with auto-repeat to be pressed, the input field will fill with an endless string, for which a request is sent to the server after each change (=each additional character). These requests are generated faster than they can be processed => the server becomes overloaded.

Describe the solution you'd like
Limit the input field with maxlength="50".
After 50 characters, no further changes are made to the search text, and no further requests for search suggestions are made.

Please implement this limit in the extension's default templates
or restrict/allow the AJAX script to be restricted (e.g., minimum/maximum number of characters for autosuggest, minimum time interval for requests, etc.).

Describe alternatives you've considered
Do the limitation on server side...

Additional context
Internal Redmine: #215471

Target versions
All supported