Add psr0 to afform extensions

[eileenmcnaughton]

Overview

Add psr0 to afform extensions

Before

Possible to get this obscure fail #24712

After

That one is working again

Technical Details

We added psr0 to civix but core extensions need it added - not all however, only those with CRM classes. I was going to run civix upgrade on all of them but hit a couple of things

1. I wanted to resolve this first - Add some return hints totten/civix#263 (comment) -(I don't think the comments are blocking)
2. I hit some errors around mgd version

So I focused on quickly fixing the ones I knew to be problems. Note I did check the line is where civix puts it (below the psr4 line)

Comments

[civibot]

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[colemanw]

OK. Tests pass and the conversation in #24714 seems to have reached agreement.