fix(855): Windows build (rebased/simplified 2025-06-23)

[joshuamegnauth54]

Closes: #855

The original issue mentions that several examples fail to build. They fail to build on Linux as well due to bit rot. I started fixing some of those issues until I realized that this is a larger project than I expected. 😆 So, this PR mainly fixes the Windows build.

[ti-integra]

build error

error: invalid format string: expected `}`, found `$`
   --> src\widget\header_bar.rs:428:43
    |
428 |                         "../../res/icons/{$name}.svg"
    |                                          -^ expected `}` in format string
    |                                          |
    |                                          because of this opening brace
    

the error point to here

    #[cfg(not(target_os = "linux"))]
                let icon = {
                    widget::icon::from_svg_bytes(include_bytes!(format!(
                        "../../res/icons/{$name}.svg"
                    )))
                    .symbolic(true)
                    .apply(widget::button::icon)
                    .padding(8)
                };

using this also in windows

                let icon = {
                    widget::icon::from_name($name)
                        .apply(widget::button::icon)
                        .padding(8)
                };

was able build table-view and spin-button but without icons

[joshuamegnauth54]

Sorry. I'm going to fix this today since I have time. 😁

[joshuamegnauth54]

This works now if you would like to use it before it's merged. The fix is a one-liner for the library, but I'll tackle some of the examples in another PR since it's a larger project.

[tredeneo]

I have upgrade to last commit and build table-view example without errors, with icons

[joshuamegnauth54]

I reverted the changes to the examples because they require more changes anyway. So, now this patch is very small and easier to merge.

The failing test is not due to this patch. Issue fixed upstream so tests pass after rebasing.