Fix lint error error: match can be simplified with .unwrap_or_default()

[kyu08]

Log: https://github.com/kyu08/fzf-make/actions/runs/11116983390/job/30888165438

error: match can be simplified with `.unwrap_or_default()`
  --> src/usecase/fzf_make/app.rs:89:29
   |
89 |               let histories = match toml::parse_history(content.to_string()) {
   |  _____________________________^
90 | |                 Err(_) => vec![], // NOTE: Show error message on message pane https://github.com/kyu08/fzf-make/issues/152
91 | |                 Ok(h) => h,
92 | |             };
   | |_____________^ help: replace it with: `toml::parse_history(content.to_string()).unwrap_or_default()`
   |
   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#manual_unwrap_or_default
   = note: `-D clippy::manual-unwrap-or-default` implied by `-D warnings`
   = help: to override `-D warnings` add `#[allow(clippy::manual_unwrap_or_default)]`

error: could not compile `fzf-make` (bin "fzf-make") due to 1 previous error

[ShehzadAhm]

I can work on this issue

[kyu08]

@ShehzadAhm
Thank you for working on this and send a PR!
I will review your PR within few days.