No special handing of `/` in user name

[nus-pe-bot]

Steps to reproduce:

1. Launch the app.
2. When it promts the user to input their name, enter Sky s/o Skylee.
3. Run exit.

Expected:

• A file is created, with special handling of the / in the file name.

Actual:

• A folder named Sky s is created, and a file named o Skylee.txt is created inside the folder.

Screenshots:

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_{[original: nus-cs2113-AY2324S1/pe-interim#887] [original labels: type.FunctionalityBug severity.Low]}

[BenedictChannn]

Team's Response

No details provided by team.

Duplicate status (if any):

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