Filter and show only those providers that have valid event metadata on provider selection

[sangeetha5491]

Description

Old workflow
Fetch all entitled provider metadata for org - L1
After user selects the provider metadata they want to subscribe to from L1 - PM
Fetch all entitled provider for org filtered by PM -L2 ( some provider metadata may not have provider, some providers may not have valid event metadata )
This resulted in not having any providers to choose from for certain provider metadata, which is a bad experience.

New workflow:
Fetch all entitled provider metadata for org - L1
Fetch all entitled provider for org - L2
Filter providers that do not have valid event metadata and create map of provider metadata to providers list - M1
Filter provider metadata from L1 that do not have any valid providers in M1 - L3

user selects the provider metadata they want to subscribe to from L3
for the selected provider metadata there is guaranteed to be valid providers and associated event metadata

Related Issue

Motivation and Context

How Has This Been Tested?

Screenshots (if appropriate):

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)

Checklist:

• I have signed the Adobe Open Source CLA.
• My code follows the code style of this project.
• My change requires a change to the documentation.
• I have updated the documentation accordingly.
• I have read the CONTRIBUTING document.
• I have added tests to cover my changes.
• All new and existing tests passed.

[codecov]

Codecov Report

Merging #49 (962a155) into main (95efc2a) will not change coverage.
The diff coverage is 100.00%.

@@            Coverage Diff            @@
##              main       #49   +/-   ##
=========================================
  Coverage   100.00%   100.00%           
=========================================
  Files            8         8           
  Lines          350       361   +11     
  Branches        58        60    +2     
=========================================
+ Hits           350       361   +11     

Files	Coverage Δ
lib/events/EventsOfInterestHelper.js	100.00% <100.00%> (ø)
lib/events/ProviderHelper.js	100.00% <100.00%> (ø)

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[purplecabbage]

I know less about the business logic here, but the code looks fine.

[francoisledroff]

lgtm