Shortcuts not working when Node tool is active
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#### Summary:
<!-- Summarize the issue/suggestion concisely: -->
It looks like recent changes to Node tool keyboard handling are masking key modifiers.
#### Steps to reproduce:
<!-- Describe what you did (step-by-step) so we can reproduce: -->
- open Inkscape
- switch to Node tool
- try to use any shortcuts that use Shift or Ctrl modifiers
#### What happened?
nothing
#### What should have happened?
shortcuts should work
Ex shortcuts to try: shift+cmd+d (doc properties), ctrl+tab (switch to next document tab)
#### Version info
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```
Inkscape 1.5-dev (1841a83b0b, 2025-01-19, custom)
Compile (Run)
GLib version: 2.82.4
GTK version: 4.16.12 (4.16.12)
glibmm version: 2.82.0
gtkmm version: 4.16.0
libxml2 version: 2.9.13
libxslt version: 1.1.42
Cairo version: 1.18.2 (1.18.2)
Pango version: 1.56.0 (1.56.0)
HarfBuzz version: 10.1.0 (10.1.0)
Poppler version: 25.01.0
OS version: macOS 15.2 (24C101) arm64
```
issue