Freegle / Iznik / 25006

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test(upload): cover the new compression telemetry handlers

Restore diff coverage for the instrumentation added in the previous commit
(Coveralls flagged a coverage dip because the new preprocess/compressor
handlers were unexercised).

Both uploader specs now spy on the Loki action() logger (mocking only
`action`, keeping the module's other exports real) and drive the new Uppy
handlers directly:

- preprocess-progress -> upload_compress_started with the original size,
  and de-duped so a repeat progress event for the same file logs once.
- compressor:complete + preprocess-complete -> upload_compress_finished with
  original/compressed sizes, elapsed_ms, compressed=true, shrunk=true.
- preprocess-complete WITHOUT compressor:complete -> the silent-failure path
  (compressed=false, size unchanged) — the real @uppy/compressor error-swallow
  behaviour this telemetry exists to measure.
- preprocess-complete with no open bracket, and bracket clearing on modal
  close, log nothing.
- uploader tag assertions (our|photo); PhotoUploader also covers the funnel
  endpoints it previously had no telemetry for (file_selected, succeeded,
  failed).

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01VqZianMqz6i4FKMdPgnvWM

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