Errors on the crew page are §5's field error, not .error-note #5069

Intent: same pattern as #4807.

Done:

• [ ] the three error-note uses in src/web/pages/crew.ts are gone
• [ ] a test for a refused crew edit finds the error beside its field, or at the form's head when it is about the whole form
• [ ] the .error-note rule and §5d stay; another issue removes them