[Simulation.Core] Refactor logic of loading a plugin from a RequiredPlugin name

[alxbilger]

Related to #6025

The new logic will use the RequiredPlugin name and add it in the Data pluginName. It also replaces the dots in the name, because it can lead to undefined behavior.

[with-all-tests]

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• it builds with SUCCESS for all platforms on the CI.
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• it does not generate new scene test failures.
• it does not break API compatibility.
• it is more than 1 week old (or has fast-merge label).

[alxbilger]

Note that I commented the msg_info because f_printLog is set to true...