fix(sigv4): Convert empty query parameters to null #6082
Merged
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Issue #, if available:
#6008
Description of changes:
Web builds send an OPTions request to verify CORS compatibility with the URL and a 404 can be returned if the URL contains unexpected query Parameters. URI.toString() appends a "?" to the URL for an empty query parameter map and we are currently setting null a query parameter to an empty map.
This fix converts empty query parameters to null if it empty to prevent the URL from unintentionally having a "?" appended.
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