Resolve binary file that appears to be text in the first 1024 bytes edge case

Description

In spec/features/projects/blobs/blob_show_spec.rb we test a case where we display a binary file that appears to be text in the first 1024 bytes but ends up being a binary.

With the refactored blob viewer this spec fails, we need to determine whether this test is still needed and fix/remove it accordingly.

• example file

Feature flags

This test fails when both the refactor_blob_viewer and highlight_js feature flags are enabled.

Proposed solution

From here

Right now the backend sends fileType: "text" to the frontend which in turn causes the frontend to render it as text. In this scenario we need fileType: "download" so that the frontend can render the download component instead of the text viewer.

Testing

Exploratory testing for verification, feature spec coverage, package-and-qa run recommended for regression testing.