Issue title: Changing currency doesn't refresh values in all places
 Issue body: Problem occurs e.g. in:
* ITEM PRICE in Cart
* Items price in search results
Problem doesn't occur in:
* Item details
* Carousel in main page

 Comments: 
 Comment 0: I updated the ticket because the price in product list got fixed in #879 (PR opened)
 Comment 1: This also closes #909 
 Comment 2: verified in github.io 
{'source': 'GithubIssues', 'repo_name_with_owner': 'SAP/cloud-commerce-spartacus-storefront', 'issue_id': 400793924, 'repo_stars': 341.0}