fix: protect View config recovery (#612)

Issue: #612
User-Visible: yes

test/config-write-conflict.test.mjs

@@ -0,0 +1,23 @@
+import test from 'node:test';
+import assert from 'node:assert/strict';
+import { recoverConfigWriteConflict } from '../test-build/config-write-conflict.js';
+
+test('#612 AC1: a View conflict reloads without an editor runtime or exception', async () => {
+  const events = [];
+
+  assert.doesNotThrow(() => recoverConfigWriteConflict(null, () => {
+    events.push('reload');
+  }));
+
+  assert.deepEqual(events, ['reload']);
+});
+
+test('#612: an editor conflict cancels its draft before reloading', () => {
+  const events = [];
+  recoverConfigWriteConflict(
+    { _cancelPath: () => events.push('cancel') },
+    () => { events.push('reload'); },
+  );
+
+  assert.deepEqual(events, ['cancel', 'reload']);
+});