fix(input): let a rebound SPACE fire while the command line has focus

A focused text field reports Status::Captured, so the key dispatch
dropped SPACE and a CUI rebind of SPACE to FINALIZE never ran while the
command line held focus (#1710). Dispatch a captured SPACE as a shortcut
only when SPACE is bound to something other than COMMANDSPACE, so the
default binding still types a space. The closure stays a plain fn, so a
static flag mirrors the binding and is refreshed wherever the bindings
change.

src/app/update/file.rs

@@ -1390,6 +1390,7 @@ impl OpenCADStudio {
         self.shortcut_bindings
             .entry("SHIFT+TAB".to_string())
             .or_insert_with(|| "DYNTABPREV".to_string());
+        crate::app::shortcuts::sync_space_dispatch_flag(&self.shortcut_bindings);
     }
 
     /// Write the config only when it changed since the last write, so a toggle