Fix loading board lists on big screen size

What does this MR do?

Previously, in some cases on large screens the subsequent loading of the next 10 issues didn't work. This MR ensures we always show IntersectionObserver component and fetch the next page of list issues

Screenshots (strongly suggested)

Before	After

Does this MR meet the acceptance criteria?

Conformity

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• This MR does not harm performance, or I have asked a reviewer to help assess the performance impact. (Merge request performance guidelines)
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Availability and Testing

• I have added/updated tests following the Testing Guide, or it's not needed. (Consider all test levels. See the Test Planning Process.)
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