Replace react-autocomplete (#1263)

## Summary
- switch InputAutocomplete to `downshift`
- remove obsolete `react-autocomplete` dependency
- document autocomplete change in the changelog

## Testing
- `npm run lint`
- `npm run build`


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https://chatgpt.com/codex/tasks/task_e_68685a78c2d483319c068f813723c1a7

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Co-authored-by: pre-commit-ci[bot] <66853113+pre-commit-ci[bot]@users.noreply.github.com>

src/components/InputAutocomplete.cy.tsx

@@ -0,0 +1,18 @@
+import InputAutocomplete from './InputAutocomplete'
+import { mount } from 'cypress/react'
+
+const fruits = ['apple', 'banana', 'cherry'];
+
+describe('<InputAutocomplete />', () => {
+  it('filters options when typing', () => {
+    mount(
+      <InputAutocomplete aria-label="Fruit" options={fruits.map(f => [f, f])} />
+    );
+    cy.get('input').focus();
+    cy.get('.maputnik-autocomplete-menu-item').should('have.length', 3);
+    cy.get('input').type('ch');
+    cy.get('.maputnik-autocomplete-menu-item').should('have.length', 1).and('contain', 'cherry');
+    cy.get('.maputnik-autocomplete-menu-item').click();
+    cy.get('input').should('have.value', 'cherry');
+  });
+});