Redund overloads from signal connect method

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This happens since #91

[HeavenVolkoff]

This issue completely slipped though my tests, thanks for finding it. I already came up with a solution that seems to be working fine, but this time I am going through the diffs of all definitions generated by yarn run build:types:all to ensure nothing odd comes up. Only downside is that generation got slightly slower, but not by much:

Before:

After:

Also, while checking the diffs, some other cases of repeatead method definitions came up. It seems the conflict resolution for methods was adding clashing definitions as overloads even when they were the same. I am going to fix that too. There were some other cases, but I couldn't pinpoint the origin for their occurrence, however my current solution will take care of them as well.