We moved Content methods ::getParserOutput and ::fillParserOutput to ContentHandler on core Patch

So we also need to do it with Profile content that extend it.
I already prepare initial Patch for it.

I'm not very familiar with BlueSpiceSocialProfile extension and not sure how to do it correctly, so the idea is to override method fillParserOutput in ProfileHandler and move implementation of Profile::getParserOutput and Profile::fillParserOutput there.

Then we should replace deprecated Content::getParserOutput call to new one ContentRenderer::getParserOutput.