!21542 Part 4: Check for file deleted and readded when getting file data

What does this MR do?

In getFileData, getRawFileData actions, and SET_FILE_RAW_DATA mutation, ignore the early returns for when a file is deleted and readded. This fixes issues with incorrect diff appearing because raw data wasn't loaded correctly for deleted and readded files.

This MR is the fourth part of the breakdown of MR !21542 (closed) and a fix for issue #39497 (closed).

This MR uses the getters defined in !21673 (merged).

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Does this MR meet the acceptance criteria?

Conformity

• Changelog entry
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Security

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