[bridge]: resolve OpenAPI spec URL dynamically based on current path

[cryptoBeliever]

Problem

Swagger UI was failing to load the OpenAPI spec when served under prefixed paths (e.g. /testnet/ethereum-wrapped/openapi).
Relative paths like ../static/... were resolved incorrectly, resulting in 404 Not Found.

Solution

The OpenAPI spec URL is now derived dynamically from window.location.pathname by removing the /openapi suffix and appending the expected static spec location.

This allows the same index.html to work correctly under:

• /openapi
• /testnet/ethereum-wrapped/openapi

without any environment-specific configuration.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 96.87%. Comparing base (21cea34) to head (2db3028).

Additional details and impacted files

@@            Coverage Diff             @@
##              dev    #1864      +/-   ##
==========================================
- Coverage   96.89%   96.87%   -0.02%     
==========================================
  Files         266      261       -5     
  Lines       19250    19116     -134     
  Branches      215      215              
==========================================
- Hits        18652    18519     -133     
+ Misses        592      591       -1     
  Partials        6        6              

Flag	Coverage Δ
bridge	99.65% <ø> (ø)
explorer-rest	?

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see 5 files with indirect coverage changes

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[Wayonb]

👍🏾