Email tokens - preparatory sanity imposition

[eileenmcnaughton]

Overview

Move crazy submit pre-processing out of buildForm

Before

Pre-processing of submitted values begins in buildForm making it mind-breakingly hard to figure out what is happening

After

Moved to getting the details from the submitted value in the to field

Technical Details

@demeritcowboy - still working through testing this & trying to build off it - but I think this is the missing piece for taking the email trait out of the twilight zone & into the 'merely laddened with technical debt' zone

I might need to add some filtering to 'submit' to remove 'should not email' types

Comments

Depends on #21676

[civibot]

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