Revert "feat(backend): Move tracing to only spans (#179)"

[cleptric]

This reverts commit beccc8f.

[sentry-io]

🔍 Existing Issues For Review

Your pull request is modifying functions with the following pre-existing issues:

📄 File: src/Http/Client.php

Function	Unhandled Issue
App\Http\Client::_sendRequest	Error: Cannot access protected property Sentry\Tracing\Span::$spanId /src/Http/Client.php in App\Http... Event Count: 16

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[codecov]

Bundle Report

Bundle size has no change ✅