Merge branch 'bugfix/fix_call_to_header_event_callback' into 'master'

fix: Fix call to event_handler on on_header state of HTTP Client

Closes IDFGH-12486

See merge request espressif/esp-idf!29953

components/esp_http_client/esp_http_client.c

@@ -248,6 +248,7 @@ static int http_on_header_event(esp_http_client_handle_t client)
 static int http_on_header_field(http_parser *parser, const char *at, size_t length)
 {
     esp_http_client_t *client = parser->data;
+    http_on_header_event(client);
     http_utils_append_string(&client->current_header_key, at, length);
 
     return 0;
@@ -268,7 +269,6 @@ static int http_on_header_value(http_parser *parser, const char *at, size_t leng
         http_utils_append_string(&client->auth_header, at, length);
     }
     http_utils_append_string(&client->current_header_value, at, length);
-    http_on_header_event(client);
     return 0;
 }