fix(Typeahead Component): Searching pattern isn't working

[imsauravsingh]

Describe the bug
The searching pattern is not working.

To Reproduce
Steps to reproduce the behavior:

1. Pr link 'Typeahead component with tdd approch #185'
2. Storybook component name: 'Typeahead'
3. Click on Default and write text in input box 'zzzzzz'
4. See error

Expected behavior
Typeahead filter should filter as per the entered text.

Screenshots