ansible: fix existing Java detection edge case

[richardlau]

Add additional check for whether an existing java ran successfully as the original check could erroneously match if the Java version being checked for was in an error message (e.g. part of the directory name included in the message).

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An example (from playbook runs for #4294):

TASK [java-base : Check if java is already installed] ***********************************************************************************************************************************************************
[WARNING]: raw module does not support the environment keyword
fatal: [test-ibm-aix72-ppc64_be-1]: FAILED! => {"changed": false, "msg": "non-zero return code", "rc": 6, "stderr": "Shared connection to 169.54.113.142 closed.\r\n", "stderr_lines": ["Shared connection to 169.54.113.142 closed."], "stdout": "Error: dl failure on line 591\r\nError: failed /opt/jdk-17.0.18+8-jre/lib/server/libjvm.so, because Could not load module /opt/jdk-17.0.18+8-jre/lib/server/libjvm.so.\r\nSystem error: Exec format error\r\n", "stdout_lines": ["Error: dl failure on line 591", "Error: failed /opt/jdk-17.0.18+8-jre/lib/server/libjvm.so, because Could not load module /opt/jdk-17.0.18+8-jre/lib/server/libjvm.so.", "System error: Exec format error"]}
...ignoring

The original check was passing because jdk-17.0.18+8 was in stdout from the failing command.

[sxa]

I'm guessing this has been tested, in which case I approve.