Fix tool switching (#9153)

Pressing they keyboard shortcut W or Shift+W crashes WK. This PR fixes
the tool switching.

### URL of deployed dev instance (used for testing):
- https://___.webknossos.xyz

### Steps to test:
- Open annotation
- Press `W`
- WK cycles through the tools without crashing



### Issues:
- fixes
#https://scm.slack.com/archives/C5AKLAV0B/p1765978379870339?thread_ts=1765963073.880699&cid=C5AKLAV0B

------
(Please delete unneeded items, merge only when none are left open)
- [x] Added changelog entry (create a `$PR_NUMBER.md` file in
`unreleased_changes` or use `./tools/create-changelog-entry.py`)
- [ ] Added migration guide entry if applicable (edit the same file as
for the changelog)
- [ ] Updated [documentation](../blob/master/docs) if applicable
- [ ] Adapted [wk-libs python
client](https://github.com/scalableminds/webknossos-libs/tree/master/webknossos/webknossos/client)
if relevant API parts change
- [ ] Removed dev-only changes like prints and application.conf edits
- [ ] Considered [common edge
cases](../blob/master/.github/common_edge_cases.md)
- [ ] Needs datastore update after deployment

Author: hotzenklotz

frontend/javascripts/viewer/view/action-bar/tools/toolbar_view.tsx

@@ -240,11 +240,12 @@ function MeasurementToolSwitch({ activeTool }: { activeTool: AnnotationTool }) {
   const { isDisabled, explanation } = disabledInfosForTools[AnnotationTool.AREA_MEASUREMENT.id];
 
   const handleSetMeasurementTool = (evt: RadioChangeEvent) => {
-    dispatch(setToolAction(evt.target.value));
+    const value = evt.target.value as AnnotationToolId;
+    dispatch(setToolAction(AnnotationTool[value]));
   };
   return (
     <Radio.Group
-      value={activeTool}
+      value={activeTool.id}
       onChange={handleSetMeasurementTool}
       style={{
         marginLeft: 10,
@@ -253,7 +254,7 @@ function MeasurementToolSwitch({ activeTool }: { activeTool: AnnotationTool }) {
       <RadioButtonWithTooltip
         title="Measure distances with connected lines by using Left Click."
         style={NARROW_BUTTON_STYLE}
-        value={AnnotationTool.LINE_MEASUREMENT}
+        value={AnnotationTool.LINE_MEASUREMENT.id}
       >
         <img src="/assets/images/line-measurement.svg" alt="Measurement Tool Icon" />
       </RadioButtonWithTooltip>
@@ -263,7 +264,7 @@ function MeasurementToolSwitch({ activeTool }: { activeTool: AnnotationTool }) {
           "Measure areas by using Left Drag. Avoid self-crossing polygon structure for accurate results."
         }
         style={NARROW_BUTTON_STYLE}
-        value={AnnotationTool.AREA_MEASUREMENT}
+        value={AnnotationTool.AREA_MEASUREMENT.id}
         disabled={isDisabled}
       >
         <img

unreleased_changes/9153.md

@@ -0,0 +1,2 @@
+### Fixed
+- Fixed a crash when switching tools with keyboard shortcuts W and Shift + W