DB\IO Placeholder regex fix for json queries, test data updates

Some doc typo fixes
test updates with remove of not used sub calls

DB IO Placeholder regex now checks for any JSON/JSONB operators

www/admin/class_test.datetime.php

@@ -451,6 +451,7 @@ function intervalStringFormatDeprecated(
 			$value = $interval->days;
 			$skip = true;
 		} else {
+			/** @phan-suppress-next-line PhanUndeclaredProperty */
 			$value = $interval->$part;
 		}
 		if ($value == 0 && $skip_last_zero === true) {