bug(deeplinking): escaping is breaking whitespaces & underscored tags/ids

[shockey]

Description

This PR improves our Deep Linking implementation:

• Tags and operationIds that contain underscores and whitespace are now tested and working properly
• Operations lacking operationIds are now tested and working properly
• Tag and operationId whitespace is now escaped with %20 instead of _
• Links relying on _-based escaping are still supported, but deprecated and tagged for removal in v4.0

Motivation and Context

Fixes #4895 and may also solve #4929.

How Has This Been Tested?

I added new unit and integration tests, and modified a few existing ones.

There should be no breaking changes to overall functionality, as the new tests cover any gaps left by modifications to the existing tests.

Checklist

My PR contains...

• No code changes (src/ is unmodified: changes to documentation, CI, metadata, etc.)
• Dependency changes (any modification to dependencies in package.json)
• Bug fixes (non-breaking change which fixes an issue)
• Improvements (misc. changes to existing features)
• Features (non-breaking change which adds functionality)

My changes...

• are breaking changes to a public API (config options, System API, major UI change, etc).
• are breaking changes to a private API (Redux, component props, utility functions, etc.).
• are breaking changes to a developer API (npm script behavior changes, new dev system dependencies, etc).
• are not breaking changes.

Documentation

• My changes do not require a change to the project documentation.
• My changes require a change to the project documentation.
• If yes to above: I have updated the documentation accordingly.

Automated tests

• My changes can not or do not need to be tested.
• My changes can and should be tested by unit and/or integration tests.
• If yes to above: I have added tests to cover my changes.
• If yes to above: I have taken care to cover edge cases in my tests.
• All new and existing tests passed.