fix(ordering): correctly remove vertex from list of runnable vertices

[ogabrielluiz]

Vertices in the first layer were being removed from runnable vertices at /build/{flow_id}/vertices call but they should actually be removed at the get_next_runnable_vertices call.

Also, in get_next_runnable_vertices they were being remove only from predecessors but should actually be removed from runnable vertices.

[github-actions]

Pull Request Validation Report

This comment is automatically generated by Conventional PR

Whitelist Report

Whitelist	Active	Result
Pull request is a draft and should be ignored	✅	❌
Pull request is made by a whitelisted user and should be ignored	❌	❌
Pull request is submitted by a bot and should be ignored	✅	❌
Pull request is submitted by administrators and should be ignored	❌	❌

Result

Pull request does not satisfy any enabled whitelist criteria. Pull request will be validated.

Validation Report

Validation	Active	Result
All commits in this pull request has valid messages	❌	✅
Pull request does not introduce too many changes	❌	✅
Pull request has a valid title	✅	✅
Pull request has mentioned issues	❌	✅
Pull request has valid branch name	❌	✅
Pull request should have a non-empty body	✅	✅

Result

Pull request satisfies all enabled pull request rules.

_{Last Modified at 05 Jul 24 13:21 UTC}

[anovazzi1]

LGTM