fix(forms): remove autofocus from WhoWhenSection entirely

The autofocus prop was added conditionally but still triggered on the
bulk-upload page. Removing it completely — callers that need focus
management can handle it independently.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

frontend/src/lib/components/document/BulkDocumentEditLayout.svelte

@@ -220,7 +220,6 @@ async function save() {
 							bind:selectedReceivers={selectedReceivers}
 							bind:dateIso={dateIso}
 							initialSenderName={initialSenderName}
-							autofocus={false}
 						/>
 						<DescriptionSection bind:tags={tags} hideTitle />
 					</ScopeCard>