config: extend default headers list and raise max to 25

- CONFIG: Add Sec-CH-UA, Sec-CH-UA-Mobile, Sec-CH-UA-Platform,
  Sec-Fetch-Dest, Sec-Fetch-Mode, Sec-Fetch-Site, Accept,
  Accept-Language, Accept-Encoding to default JsonSockLogHeaders
- CONFIG: Raise DEFAULT_MAX_HEADERS from 10 to 25
- DOC: Update architecture.yml value_example and conf/mod_reqin_log.conf

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

architecture.yml

@@ -189,7 +189,10 @@ configuration:
     - name: JsonSockLogHeaders
       type: list
       context: server-config
-      value_example: ["X-Request-Id", "X-Trace-Id", "User-Agent"]
+      value_example: ["X-Request-Id", "X-Trace-Id", "User-Agent", "Referer",
+        "X-Forwarded-For", "Sec-CH-UA", "Sec-CH-UA-Mobile", "Sec-CH-UA-Platform",
+        "Sec-Fetch-Dest", "Sec-Fetch-Mode", "Sec-Fetch-Site",
+        "Accept", "Accept-Language", "Accept-Encoding"]
       description: >
         List of HTTP header names to log. For each configured header <H>,
         the module adds a JSON field 'header_<H>' at the root level of the
@@ -198,7 +201,7 @@ configuration:
     - name: JsonSockLogMaxHeaders
       type: integer
       context: server-config
-      default: 10
+      default: 25
       min: 0
       description: >
         Maximum number of headers from JsonSockLogHeaders to actually log.