Redraw when needed and context menu in input fields (#896)

Selection changes, scrolling and hyperlink highlights all just flag the
terminal as dirty. Without asking for a redraw they would not show up
until something else happens to repaint the window. This becomes a
problem after iced PR below gets merged.


Depends on 
- [x] https://github.com/pop-os/iced/pull/377
- [x] https://github.com/pop-os/libcosmic/pull/1382
- [x] https://github.com/pop-os/libcosmic/pull/1388
- [x] https://github.com/pop-os/cosmic-files/pull/1815

____
- [x] I have disclosed use of any AI generated code in my commit
messages.
- If you are using an LLM, and do not fully understand the changes it is
making to the code base, do not create a PR.
- In our experience, AI generated code often results in overly complex
code that lacks enough context for a proper fix or feature inclusion.
This results in considerably longer code reviews. Due to this, AI
authored or partially authored PRs may be closed without comment.
- [x] I understand these changes in full and will be able to respond to
review comments.
- [x] My change is accurately described in the commit message.
- [x] My contribution is tested and working as described.
- [x] I have read the [Developer Certificate of
Origin](https://developercertificate.org/) and certify my contribution
under its conditions.

src/terminal.rs

@@ -196,7 +196,7 @@ impl TerminalPaneGrid {
         }
     }
     pub fn unfocus_all_terminals(&self) {
-        for (_pane, tab_model) in self.panes.panes.iter() {
+        for tab_model in self.panes.panes.values() {
             let entity = tab_model.active();
             if let Some(terminal) = tab_model.data::<Mutex<Terminal>>(entity) {
                 let mut terminal = terminal.lock().unwrap();

src/terminal_box.rs

@@ -543,7 +543,7 @@ where
                     fn fill<Renderer: renderer::Renderer>(
                         &mut self,
                         renderer: &mut Renderer,
-                        is_focused: bool,
+                        _is_focused: bool,
                     ) {
                         let cosmic_text_to_iced_color = |color: cosmic_text::Color| {
                             Color::from_rgba(
@@ -1615,6 +1615,10 @@ where
             }
             _ => (),
         }
+
+        if terminal.needs_update {
+            shell.request_redraw();
+        }
     }
 }