Upgrade CodeMirror and Lezer dependencies (#30615)

* Upgrade CodeMirror and Lezer dependencies
* Ensure that BraceWidget and IconBraceWidget always have string content
* Add updateDOM to BraceWidget
* Use pinned versions
* Fix description list decoration

GitOrigin-RevId: 5306f7f09290eb9a2c375e97d33509537f3c5e5f

services/web/frontend/js/features/source-editor/extensions/visual/atomic-decorations.ts

@@ -1017,7 +1017,7 @@ export const atomicDecorations = (options: Options) => {
                   ...decorateArgumentBraces(
                     new BraceWidget(decorateBrackets ? '' : '['),
                     argumentNode,
-                    from,
+                    argumentNode.from,
                     false,
                     new BraceWidget(decorateBrackets ? '' : ']'),
                     { open: OpenBracket, close: CloseBracket }

services/web/frontend/js/features/source-editor/extensions/visual/visual-widgets/brace.ts

@@ -1,16 +1,14 @@
 import { WidgetType } from '@codemirror/view'
 
 export class BraceWidget extends WidgetType {
-  constructor(private content?: string) {
+  constructor(private content = '') {
     super()
   }
 
   toDOM() {
     const element = document.createElement('span')
     element.classList.add('ol-cm-brace')
-    if (this.content !== undefined) {
-      element.textContent = this.content
-    }
+    element.textContent = this.content
     return element
   }
 
@@ -22,6 +20,11 @@ export class BraceWidget extends WidgetType {
     return widget.content === this.content
   }
 
+  updateDOM(element: HTMLSpanElement): boolean {
+    element.textContent = this.content
+    return true
+  }
+
   coordsAt(element: HTMLElement) {
     return element.getBoundingClientRect()
   }

services/web/frontend/js/features/source-editor/extensions/visual/visual-widgets/icon-brace.ts

@@ -1,7 +1,7 @@
 import { WidgetType } from '@codemirror/view'
 
 export class IconBraceWidget extends WidgetType {
-  constructor(private content?: string) {
+  constructor(private content = '') {
     super()
   }
 
@@ -9,9 +9,7 @@ export class IconBraceWidget extends WidgetType {
     const element = document.createElement('span')
     element.classList.add('ol-cm-brace')
     element.classList.add('ol-cm-icon-brace')
-    if (this.content !== undefined) {
-      element.textContent = this.content
-    }
+    element.textContent = this.content
     return element
   }
 
@@ -24,7 +22,7 @@ export class IconBraceWidget extends WidgetType {
   }
 
   updateDOM(element: HTMLElement): boolean {
-    element.textContent = this.content ?? ''
+    element.textContent = this.content
     return true
   }