[macOS CI] Flaky MemoryLeakB42329 and VerifyEmptyViewResizesWhenBoundsChange Pass Locally but Fail in CI

### Description

These MemoryLeakB42329 and VerifyEmptyViewResizesWhenBoundsChange tests pass locally without any failures, but they fail only in macOS CI.
Build Link - https://dev.azure.com/dnceng-public/public/_build/results?buildId=1490293&view=ms.vss-test-web.build-test-results-tab

**Test Cases:**
- MemoryLeakB42329
- VerifyEmptyViewResizesWhenBoundsChange

### Steps to Reproduce

_No response_

### Link to public reproduction project repository

_No response_

### Version with bug

10.0.80

### Is this a regression from previous behavior?

Not sure, did not test other versions

### Last version that worked well

Unknown/Other

### Affected platforms

macOS

### Affected platform versions

_No response_

### Did you find any workaround?

_No response_

### Relevant log output

```shell

```

Start with the linked Azure DevOps build and inspect the failures for MemoryLeakB42329 and VerifyEmptyViewResizesWhenBoundsChange. Compare the macOS CI environment with local runs and trace the definitions of both named tests. Done means both tests pass reliably in macOS CI without masking the failures.

Written by the indexing model from the issue text.