PS-10161 [DOCS] - pre_authenticate and general log events are still g…

[patrickbirch]

…enerated even when user filter is set to {"filter": {"log": false}}

new file:   docs/write-audit-log-filter-definitions.md
modified:   mkdocs-base.yml

[svetasmirnova]

Generally looks good but I left few comments. Please check and resolve them.

[mchawla16]

This filter is giving an error in PS8.4.6-6

SELECT audit_log_filter_set_filter('log_query_digest', '
{
  "filter": {
    "class": {
      "name": "general",
      "event": [
        {
          "name": "status",
          "print": {
            "field": {
              "name": "general_query.str",
              "print": false,
              "replace": {
                "function": {
                  "name": "query_digest"
                }
              }
            }
          }
        }
      ]
    }
  }
}');

2025-12-02T11:47:36.802139Z 192 [ERROR] [MY-048083] [Server] Component audit_log_filter reported: 'Event field 'general_query.str' cannot be replaced'
2025-12-02T11:47:36.802301Z 192 [ERROR] [MY-048108] [Server] Component audit_log_filter reported: 'Wrong JSON filter 'log_query_digest' format, bad format for 'field' action'
2025-12-02T11:47:36.802350Z 192 [ERROR] [MY-048111] [Server] Component audit_log_filter reported: 'Wrong argument: incorrect rule definition ' {   "filter": {     "class": {       "name": "general",       "event": [         {           "name": "status",           "print": {             "field": {               "name": "general_query.str",               "print": false,               "replace": {                 "function": {                   "name": "query_digest"                 }               }             }           }         }       ]     }   } }''