Disable single parsing of compiler graphs till the impact of it on heap usage decreases see https://github.com/oracle/graal/issues/3435 and https://github.com/graalvm/mandrel/issues/304#issuecomment-952070568 for more details

https://github.com/quarkusio/quarkus/pull/19511 didn't take into account runs with constraint memory and it also measured the max committed heap size instead of the max heap usage. Bringing back `-H:-ParseOnce` reduces the heap usage significantly, from 3.9G down to 2.7G, in `integration-tests/main`.