fix: Update AutocompleteInput immediately when re-selecting the same option with filterSelectedOptions=false

When filterSelectedOptions is false, selecting an already-selected option
after partially deleting the input text left the input showing the partial
text until blur. MUI fires onInputChange with reason='reset' in this case
but the handler only updated filterValue on user-typing events or when the
new value differed from the selection. Added handling for reason='reset'
with event !== null (to skip MUI's programmatic useEffect resets) and
doesQueryMatchSelection (to skip create-option clicks).

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>