fix: fill in search term only on explicit input change, clear otherwise

The search term should not be filled with prefilled values when user interacts
with the widget. This fixes the issues with filter being applied unnecessarily.

Author: r0b1n

packages/pluggableWidgets/combobox-web/CHANGELOG.md

@@ -11,6 +11,7 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 ### Fixed
 
 - We fixed an issue where combobox failed to render a proper width on auto-fit container.
+- We fixed an issue with combobox unnecessary applying filtering.
 
 - We fixed an issue where combobox lazy load is not working on initial load.
 

packages/pluggableWidgets/combobox-web/src/hooks/useDownshiftSingleSelectProps.ts

@@ -30,9 +30,11 @@ export function useDownshiftSingleSelectProps(
                 selector.setValue(selectedItem ?? null);
             },
             onInputValueChange({ inputValue, type }: UseComboboxStateChange<string>) {
-                selector.options.setSearchTerm(inputValue!);
                 if (selector.onFilterInputChange && type === useCombobox.stateChangeTypes.InputChange) {
+                    selector.options.setSearchTerm(inputValue!);
                     selector.onFilterInputChange(inputValue!);
+                } else {
+                    selector.options.setSearchTerm("");
                 }
             },
             getA11yStatusMessage(options) {