MM-43077 Allow inline JSON in config.json for advanced logging config (#23324)

* add AdvancedLoggingJSON to LogSettings and deprecate AdvancedLoggingConfig
* allow embedded JSON in config for advanced logging.

server/config/utils_test.go

@@ -221,7 +221,7 @@ func TestIsJSONMap(t *testing.T) {
 	}
 	for _, tt := range tests {
 		t.Run(tt.name, func(t *testing.T) {
-			if got := isJSONMap(tt.data); got != tt.want {
+			if got := isJSONMap([]byte(tt.data)); got != tt.want {
 				t.Errorf("isJSONMap() = %v, want %v", got, tt.want)
 			}
 		})