Try to replace `timeout` cmd in scripts to make it compatible cross platforms

## Problem Statement
in `test/e2e/chainsaw/common/scripts/host_connectivity_test_udp.sh` and `test/e2e/chainsaw/common/scripts/host_connectivity_test_tcp.sh`, `timeout` is used, which is unable to execute in platforms like macos.
...

## Proposed Solution

...

## Additional Information

...

## Acceptance Criteria

- [ ] Documentation is updated with this new feature / enhancement
- [ ] Tests are added for this feature / enhancement
- [ ] Helm chart is updated to work with this feature / enhancement
- [ ] As a user, I can ...

Start with test/e2e/chainsaw/common/scripts/host_connectivity_test_udp.sh and test/e2e/chainsaw/common/scripts/host_connectivity_test_tcp.sh, locating how each script invokes timeout. Check the existing end-to-end connectivity tests on macOS and another supported platform, then verify that both scripts run without the platform-specific failure.

Written by the indexing model from the issue text.