Fix passphrase quoting in decrypt_remote_file_to_string for Windows

[kada2004]

…emotes

the fix detects the remote OS using the existing `get_remote_os() helper, already used in tpt_utils.py and applies the correct quoting:

• Windows: double quotes with ''' escaping
• Unix/Linus: single quotes with '\'' escaping
  closes: Quoting of passphrase won't work for windows #69396

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