[bug] FileDialogBuilder accepts non-existing files

[ottosson]

Describe the bug

When I open files with the FileDialogBuilder I can write anything in the file name field and the dialog accepts this as if it existed.

Reproduction

dialog::blocking::FileDialogBuilder::new()
    .set_parent(&window)
    .set_title("Add files")
    .pick_files()

Expected behavior

The expected behavior would be for the dialog to complain about the file not existing as it does in most applications.

(from notepad.exe)

Full tauri info output

[✔] Environment
    - OS: Windows 10.0.22631 X64
    ✔ WebView2: 125.0.2535.67
        - Visual Studio Build Tools 2019
        - Visual Studio Professional 2022
    ✔ rustc: 1.78.0 (9b00956e5 2024-04-29)
    ✔ cargo: 1.78.0 (54d8815d0 2024-03-26)
    ✔ rustup: 1.27.1 (54dd3d00f 2024-04-24)
    ✔ Rust toolchain: stable-x86_64-pc-windows-msvc (default)
    - node: 22.2.0
    - npm: 10.2.0

[-] Packages
    - tauri [RUST]: 1.6.5
    - tauri-build [RUST]: 1.5.2
    - wry [RUST]: 0.24.9
    - tao [RUST]: 0.16.9
    - @tauri-apps/api [NPM]: 1.5.6
    - @tauri-apps/cli [NPM]: 1.5.14

[-] App
    - build-type: bundle
    - CSP: unset
    - distDir: ../dist
    - devPath: http://localhost:5173/
    - framework: React
    - bundler: Vite

Stack trace

No response

Additional context

No response