fix: show "more call for speaker" button when appropriate

[maze-runnar]

Fixes #3309
changes it propose
when there are less than or equal to three the "show more call for speaker " button will not be visible .

Checklist

• I have read the Contribution & Best practices Guide.
• My branch is up-to-date with the Upstream development branch.
• The acceptance, integration, unit tests and linter pass locally with my changes
• I have added tests that prove my fix is effective or that my feature works
• I have added necessary documentation (if appropriate)

[uds5501]

Works fine

[kushthedude]

It's not the correct way callForSpeakersEvents returns the queried events not there number. Also, the comparison works here due to the Ember Arith Helper. I think a new property CFSeventsnumber should be used for comparison, I am also not sure if adding new property will be optimal or not. Hence, I will wait for the review of other mentors.

[maze-runnar]

@kushthedude i understand what you are trying to say . So i changed the comparison here from {{#if (gt callForSpeakersEvents 3)}} to {{#if (gt callForSpeakersEvents.length 3)}}
now here is no reason to say it false in my opinion.

[maze-runnar]

Please check it .

[maze-runnar]

@uds5501 can you please check it again that it is also working fine ?

[maze-runnar]

I changed the code ,as @kushthedude said .The previous was working fine but this gives a better understanding IMO.

[maze-runnar]

@kushthedude can you please check it again , if it working fine ?

[uds5501]

LGTM

[mariobehling]

Thanks a lot for this PR. Please help to get some important issues out of the way in this project. We have labeled these issues here: https://github.com/fossasia/open-event-frontend/issues?q=is%3Aissue+is%3Aopen+label%3A%22Priority%3A+High%22 Our goal is to focus on these issues.

[maze-runnar]

Ok @mariobehling i will trt to solve these issues .