SearchKit - Prevent race conditions in search display loading

[colemanw]

Overview

Fixes some oddities when reloading results in a Search display after typing into a filter field.

Before

Depending on how fast or slow you type, the wrong results may be shown in the table or the pager.

After

Correct results always shown.

Technical Details

The problem was race conditions where typing into a filter field would trigger multiple requests per second. This fix:

• Increases debounce timeout from 100 to 800 ms
• Internally tracks the requests to ensure that later requests always take priority

[civibot]

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[eileenmcnaughton]

I'm not sure I types fast enough to replicate this - but nothing seems to be broken by it in my testing