[bug] eth-bot response to the pull request created by bot for status change

[poojaranjan]

The first response (by the eth-bot) to a pull request created by a general user seems pointless for a pull request created by the bot.

In the below example, the message from the bot "Hi! I'm a bot, and I wanted to automerge your PR, but couldn't because of the following issue(s):" seems insignificant as the first message to the user(s) is meant to ping the author. Unless there is any further action taken by the author(s), eth-bot doesn't need to send any such response.

[alita-moore]

This is addressed here 519c91e

The way this works is that when the PR is first opened it is a draft. The bit ignore the draft. But if a change is made it will then process the changes as normal.