We only need to run the Search edu if it is enabled on devices. The code
itself is also made more generic in terms of method and variable names.
Fix: 330401405
Test: Enable and disable the search function and check whether the edu tooltip shows
up for each specific use case.
Flag: ACONFIG com.android.launcher3.enable_taskbar_pinning NEXTFOOD
Change-Id: I1cea3ee56922c0b47ae7e8379aad4b36570daa17
