[stable31] fix(files): preserve encryptedVersion when copying cache entries - #62851
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Cache::copyFromCache() rebuilt the target's cache row via cacheEntryToArray(), which only carried over a boolean `encrypted` flag and dropped the real `encryptedVersion` count. Since View::copy() unconditionally calls copyFromCache() after the storage copy completes, this silently overwrote the correct encryptedVersion that Encryption::updateEncryptedVersion() had just set, collapsing it back to 0/1 on every copy of a file whose encryptedVersion was above 1. cacheEntryToArray() now includes the source entry's encryptedVersion when it is encrypted. The existing encrypted-to-non-encrypted-storage override in copyFromCache() also clears encryptedVersion alongside `encrypted`, since normalizeData() prefers encryptedVersion over `encrypted` when both are present in the update data. Signed-off-by: Kent Delante <kent@delante.me> Assisted-by: ClaudeCode:claude-sonnet-5
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Signed-off-by: Kent Delante <kent@delante.me> Assisted-by: ClaudeCode:claude-sonnet-5
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Backport of #62255
Warning, This backport's changes differ from the original and might be incomplete⚠️
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