enabling alert throttling by default

[Prateeknandle]

Purpose of PR?: enabling alert throttling by default

Fixes #

Does this PR introduce a breaking change? no

If the changes in this PR are manually verified, list down the scenarios covered:: yes

Additional information for reviewer? : Mention if this PR is part of any design or a continuation of previous PRs

Checklist:

• [ ] Bug fix. Fixes #
• [ ] New feature (non-breaking change which adds functionality)
• [ ] Breaking change (fix or feature that would cause existing functionality to not work as expected)
• [ ] This change requires a documentation update
• [ ] PR Title follows the convention of <type>(<scope>): <subject>
• [ ] Commit has unit tests
• [ ] Commit has integration tests