feat: send step only for filled epochs

[mpetrun5]

Sends step only for filled epoch when a deposit is found from the last processed block number.
Note On restarts submit to all domains to prevent missing any steps

Description

Related Issue Or Context

Closes: #

How Has This Been Tested? Testing details.

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)
• Documentation

Checklist:

• I have commented my code, particularly in hard-to-understand areas.
• I have ensured that all acceptance criteria (or expected behavior) from issue are met
• I have updated the documentation locally and in docs.
• I have added tests to cover my changes.
• I have ensured that all the checks are passing and green, I've signed the CLA bot

[github-actions]

Go Test coverage is 56.9 %\ ✨ ✨ ✨

[github-actions]

Go Test coverage is 92.2 %\ ✨ ✨ ✨

[github-actions]

Go Test coverage is 92.2 %\ ✨ ✨ ✨