[Backport 2.16] Fix direct url load for trace analytics

[ps48]

Description

Loading trace analytics directly via URL defaults to services page even when /traces path is added in the URL.
Main PR: #2024

Example:

http://host:port/app/observability-traces#/services -> Loads services as expected.
http://host:port/app/observability-traces#/traces -> Doesn't load traces page, rather loads services page. 

Issues Resolved

Fixes the default route path when URL has the required hash and overrides the one in props.

Check List

• New functionality includes testing.
  • All tests pass, including unit test, integration test and doctest
• New functionality has been documented.
  • New functionality has javadoc added
  • New functionality has user manual doc added
• Commits are signed per the DCO using --signoff

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