Restore rewound prompts immediately on iOS (#3946)

* fix(app): restore rewound text atomically

The native composer could consume a replacement revision before the matching draft-store value arrived, leaving the mounted input blank until remount. Carry the replacement text with its revision so scheduling order cannot split the command from its payload.

* fix(app): isolate launch composer drafts

Give chat and terminal launch composers separate React identities so each uncontrolled editor lifetime remains owned by its draft mode.

packages/app/src/components/workspace-setup-dialog.tsx

@@ -439,7 +439,7 @@ export function WorkspaceSetupDialog() {
           blurOnSubmit={true}
           value={chatDraft.text}
           onChangeText={chatDraft.editText}
-          textReplacementKey={chatDraft.textReplacementKey}
+          textReplacement={chatDraft.textReplacement}
           attachments={chatDraft.attachments}
           onChangeAttachments={chatDraft.setAttachments}
           cwd={sourceDirectory}