fix(projects): open autocomplete on click/type, not focus

The dialog autofocuses the project input on open; opening the dropdown on
focus made it spring open with no user interaction. Open on click or typing
instead, so the field is type-ready on open without showing the list.

tests/defect-form.nuxt.spec.ts

@@ -26,7 +26,7 @@ type Wrapper = Awaited<ReturnType<typeof mountSuspended>>
 const dialogEl = (w: Wrapper) => w.find('dialog').element as HTMLDialogElement
 
 async function pickProject(wrapper: Wrapper) {
-  await wrapper.find('[data-test="project-input"]').trigger('focus')
+  await wrapper.find('[data-test="project-input"]').trigger('click')
   await wrapper.find('[data-test="project-option"]').trigger('click')
 }