Use purify over escape for price set fields

[eileenmcnaughton]

Overview

Use purify over escape for price set fields

Before

After

Technical Details

This escaping was added in master only because we are assigning fields derived from apiv4 & hence needed to ensure they were secure - but it turned out to be a bit aggressive

The label was causing an issue, but I wasn't confident people couldn't leverage html from the various help_pre, description fields so I used purify for them too

Comments

[civibot]

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[eileenmcnaughton]

unrelated fail - test this please

[eileenmcnaughton]

test this please

[eileenmcnaughton]

test this please

[eileenmcnaughton]

Seeing this fail all day on multiple PRs - test this please