egui egui::TextEdit::singleline long text will make ui.horizontal invalid

[januwA]

Describe the bug

To Reproduce
Steps to reproduce the behavior:

Expected behavior
The width of singleline has not changed. Horizontal should use the width of singleline instead of the length of the text.

Screenshots

Desktop (please complete the following information):

• OS: win11
• Browser
• Version

Smartphone (please complete the following information):

• Device:
• OS:
• Browser
• Version

Additional context

 cargo --version
cargo 1.84.0 (66221abde 2024-11-19)

[dependencies]
eframe = { version = "0.30.0", default-features = false, features = ["accesskit", "glow", "persistence"]}
egui_extras = { version = "0.30", features = ["image"] }

ui.horizontal(|ui| {
                    egui::TextEdit::singleline(&mut httpConfig.name)
                        .desired_width(100.0)
                        .show(ui);
                    
                    egui::ComboBox::from_id_source("method")
                        .selected_text(httpConfig.req_cfg.method.as_ref())
                        .show_ui(ui, |ui| {
                            for m in &METHODS {
                                ui.selectable_value(
                                    &mut httpConfig.req_cfg.method,
                                    m.to_owned(),
                                    m.as_ref(),
                                );
                            }
                        });

                    ui.add(
                        egui::TextEdit::singleline(&mut httpConfig.req_cfg.url)
                            .desired_width(300.)
                            .hint_text("http url"),
                    );

                    ui.add(
                        egui::TextEdit::singleline(&mut httpConfig.send_count_ui)
                            .desired_width(60.)
                            .hint_text("Count"),
                    );

                    if ui
                        .add_enabled(!httpConfig.req_cfg.url.is_empty(), egui::Button::new("Send"))
                        .clicked()
                    {
                    }

                    ui.separator();

                    // request result count
                    let (s, e, r) = httpConfig.get_request_reper();
                    ui.label(format!("s:{s}, e:{e}, r:{r}"));

                    ui.separator();
                });

[MetaflameDragon]

Looks like a duplicate of #5500

[IaVashik]

Same here. This can be easily reproduced with just ui.add(egui::TextEdit::singleline(&mut some_variable)); inside a CentralPanel. The CentralPanel width becomes larger than the window width, breaking the layout :}

Os: Linux + X11, Native app, eframe v0.30.0

[IaVashik]

The egui.rs widget gallery exhibits the same bug

[IaVashik]

This PR created this bug: #3660