[GAME] SaveDangerous does not properly rotate save metadata

[1upD]

Describe the bug

EZ2 adds save metadata that tells important information about a save like whether or not Wilson is present and which EZ2 version the save was made on.

logic_autosave entities (https://developer.valvesoftware.com/wiki/Logic_autosave) have an input to "save dangerously", which means an autosave is made an only kept if the player stays alive for a certain number of seconds.

When saving with "SaveDangerous", metadata files are not properly renamed which can cause autosaves to lose metadata.

Steps to reproduce

Steps to reproduce the behavior:

1. Call the input "SaveDangerous" on a logic_autosave entity (https://developer.valvesoftware.com/wiki/Logic_autosave)
2. Observe the temporary save file for the dangerous autosave and its metadata
3. Continue playing. When the save is rotated into a normal autosave, the metadata is not properly rotated.

Expected behavior

SaveDangerous should work with metadata the same way that a normal autosave does.

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