fix: update inferno test selectors

[ssvegaraju]

Issue #, if available:

Description of changes:
The testing Okta deployment for CDK is a different version than with serverless, and hence the selectors used to input username/pw during the patient picker flow are different. This PR fixes that bug.

Tested by updating the selectors locally and running the inferno test suite.

By submitting this pull request, I confirm that my contribution is made under the terms of the Apache 2.0 license.

[codecov-commenter]

Codecov Report

Merging #666 (8a195b0) into smart-develop (7ed40d9) will not change coverage.
The diff coverage is n/a.

@@              Coverage Diff               @@
##           smart-develop     #666   +/-   ##
==============================================
  Coverage          95.60%   95.60%           
==============================================
  Files                  4        4           
  Lines                205      205           
  Branches              30       30           
==============================================
  Hits                 196      196           
  Misses                 9        9           

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