feat: dictate next signer (#1719)

Adds next recipient dictation functionality to document signing flow,
allowing assistants and signers to update the next recipient's
information during the signing process.

## Related Issue

N/A

## Changes Made

- Added form handling for next recipient dictation in signing dialogs
- Implemented UI for updating next recipient information
- Added e2e tests covering dictation scenarios:
  - Regular signing with dictation enabled
  - Assistant role with dictation
  - Parallel signing flow
  - Disabled dictation state

## Testing Performed

- Added comprehensive e2e tests covering:
  - Sequential signing with dictation
  - Assistant role dictation
  - Parallel signing without dictation
  - Form validation and state management
- Tested on Chrome and Firefox
- Verified recipient state updates in database

packages/trpc/server/document-router/router.ts

@@ -371,6 +371,7 @@ export const documentRouter = router({
           redirectUrl: meta.redirectUrl,
           distributionMethod: meta.distributionMethod,
           signingOrder: meta.signingOrder,
+          allowDictateNextSigner: meta.allowDictateNextSigner,
           emailSettings: meta.emailSettings,
           requestMetadata: ctx.metadata,
         });

packages/trpc/server/document-router/schema.ts

@@ -268,6 +268,7 @@ export const ZUpdateDocumentRequestSchema = z.object({
       dateFormat: ZDocumentMetaDateFormatSchema.optional(),
       distributionMethod: ZDocumentMetaDistributionMethodSchema.optional(),
       signingOrder: z.nativeEnum(DocumentSigningOrder).optional(),
+      allowDictateNextSigner: z.boolean().optional(),
       redirectUrl: ZDocumentMetaRedirectUrlSchema.optional(),
       language: ZDocumentMetaLanguageSchema.optional(),
       typedSignatureEnabled: ZDocumentMetaTypedSignatureEnabledSchema.optional(),