Bind spells duration has a floor of 5 seconds if not fully resisted.

[blueBounder]

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• I have tested my code and the things my code has changed since the last commit in the PR and will test after any later commits.

What does this pull request do?

This is a follow up on an earlier PR #6194 that implemented bind's random duration.
This earlier PR implemented bind's random duration with a floor of 1 second when not fully resisted, leading to instances of the spell's effect wearing off almost immediately.
Further capture data supports a floor for bind's duration when not fully resisted of 5 seconds.
Further discussion can be found in discord thread here.

Steps to test these changes

1. Find a mob that is not bind immune
2. Cast bind and wait for the spell to wear off naturally
3. Verify time difference is between 5 and 60 seconds
4. Repeat many, many times.
5. Find a mob that is stun immune- verify change did not break this as well.