Dashboards: Fix issue causing crashes when saving new dashboard (#77620)

Closes #77593

.betterer.results

@@ -3000,9 +3000,10 @@ exports[`better eslint`] = {
       [0, 0, 0, "Do not use any type assertions.", "2"],
       [0, 0, 0, "Do not use any type assertions.", "3"],
       [0, 0, 0, "Do not use any type assertions.", "4"],
-      [0, 0, 0, "Unexpected any. Specify a different type.", "5"],
-      [0, 0, 0, "Do not use any type assertions.", "6"],
-      [0, 0, 0, "Unexpected any. Specify a different type.", "7"]
+      [0, 0, 0, "Do not use any type assertions.", "5"],
+      [0, 0, 0, "Unexpected any. Specify a different type.", "6"],
+      [0, 0, 0, "Do not use any type assertions.", "7"],
+      [0, 0, 0, "Unexpected any. Specify a different type.", "8"]
     ],
     "public/app/features/dashboard/components/DashboardRow/DashboardRow.test.tsx:5381": [
       [0, 0, 0, "Unexpected any. Specify a different type.", "0"]

public/app/features/dashboard/components/DashboardPrompt/DashboardPrompt.tsx

@@ -146,6 +146,11 @@ export function ignoreChanges(current: DashboardModel | null, original: object |
     return true;
   }
 
+  // Ignore changes if original is unsaved
+  if ((original as DashboardModel).version === 0) {
+    return true;
+  }
+
   // Ignore changes if the user has been signed out
   if (!contextSrv.isSignedIn) {
     return true;

public/app/features/dashboard/state/__fixtures__/dashboardFixtures.ts

@@ -22,6 +22,7 @@ export function createDashboardModelFixture(
     editable: true,
     graphTooltip: defaultDashboardCursorSync,
     schemaVersion: 1,
+    version: 1,
     timezone: '',
     ...dashboardInput,
   };