fix(@schematics/angular): fix migration of jasmine.clock().mockDate()

The migration previously migrated `jasmine.clock().mockDate()` to `vi.setSystemTime()`, which does not compile because `vi.setSystemTime()` requires an argument.
This commit fixes it by migrating `jasmine.clock().mockDate()` to `vi.setSystemTime(new Date())`.

Author: jnizet

packages/schematics/angular/refactor/jasmine-vitest/transformers/jasmine-misc.ts

@@ -61,7 +61,15 @@ export function transformTimerMocks(
       node,
       `Transformed \`jasmine.clock().${pae.name.text}\` to \`vi.${newMethodName}\`.`,
     );
-    const newArgs = newMethodName === 'useFakeTimers' ? [] : node.arguments;
+    let newArgs: readonly ts.Expression[] = node.arguments;
+    if (newMethodName === 'useFakeTimers') {
+      newArgs = [];
+    }
+    if (newMethodName === 'setSystemTime' && node.arguments.length === 0) {
+      newArgs = [
+        ts.factory.createNewExpression(ts.factory.createIdentifier('Date'), undefined, []),
+      ];
+    }
 
     return createViCallExpression(newMethodName, newArgs);
   }

packages/schematics/angular/refactor/jasmine-vitest/transformers/jasmine-misc_spec.ts

@@ -31,6 +31,11 @@ describe('Jasmine to Vitest Transformer', () => {
         input: `jasmine.clock().mockDate(new Date('2025-01-01'));`,
         expected: `vi.setSystemTime(new Date('2025-01-01'));`,
       },
+      {
+        description: 'should transform jasmine.clock().mockDate() to vi.setSystemTime(new Date())',
+        input: `jasmine.clock().mockDate();`,
+        expected: `vi.setSystemTime(new Date());`,
+      },
     ];
 
     testCases.forEach(({ description, input, expected }) => {