Fix rendering of inline code blocks for docs

Styling of codeblocks:

- Uniform margins as other documentation elements.
- Add small margin for inline code-blocks.
- Use different background color for inline code-blocks.
- Introduce `inline-code` and `code-block` mixins for clarity in
  styling.

Overflowing of codeblocks:

- Improve flex layout of the tree component to be handle overflowing
  content and providing maximum available width. To be able to correctly
  provide maximum available width in card content, card expansion layout
  is changed so both close button and the content gets their full width.
- Other refactorings to support this:
  - Introduce separate Vue component for checkboxes of nodes for better
    separation of concerns and improved maintainability.
  - Refactor `LeafTreeNode` to make it simpler, separating layout concerns
    from other styling.
  - `ScriptsTree.vue`: Prefer `<div>`s instead of `<span>`s as they
    represent large content.
  - Remove unnecessary `<div>`s and use `<template>`s to reduce HTML
    complexity.
  - Update script documentation to not include unnecessary left padding
    on script code blocks.
  - Refactor SCSS variable names in `DocumentationText.vue` for clarity.

src/presentation/components/Scripts/View/Tree/NodeContent/Documentation/DocumentationText.vue

@@ -59,19 +59,49 @@ function renderAsMarkdownListItem(content: string): string {
 
 $text-color: $color-on-primary;
 $text-size: 0.75em; // Lower looks bad on Firefox
+$base-spacing: $text-size;
+
+@mixin code-block() {
+  pre {
+    @content; // :has(> code) { @content; } would be better, but Firefox doesn't support it https://caniuse.com/css-has
+  }
+}
+
+@mixin inline-code() {
+  :not(pre) > code {
+    @content;
+  }
+}
+
+@mixin code() {
+  code {
+    @content;
+  }
+}
 
 .documentation-text {
   color: $text-color;
   font-size: $text-size;
   font-family: $font-main;
-  code {
-    word-break: break-all; // Inline code should wrap with the line, or whole text overflows
+
+  @include code {
     font-family: $font-normal;
     font-weight: 600;
   }
+
+  @include inline-code {
+    word-break: break-all; // Enables inline code to wrap with the text, even for long single words (like registry paths), thus preventing overflow.
+  }
+
+  @include code-block {
+    padding: $base-spacing;
+    background: $color-primary-darker;
+    overflow: auto; // Prevents horizontal expansion of inner content (e.g., when a code block is shown)
+  }
+
   a {
     &[href] {
-      word-break: break-word; // So URLs don't overflow
+      word-break: break-word; // Enables long URLs to wrap within the container, preventing horizontal overflow.
     }
     &[href^="http"]{
       &:after {
@@ -116,47 +146,49 @@ $text-size: 0.75em; // Lower looks bad on Firefox
     }
   }
 
-  @mixin left-padding($selectors, $horizontal-gap) {
+  @mixin left-padding($selectors, $horizontal-spacing) {
     #{$selectors} {
-      padding-inline-start: $horizontal-gap;
+      padding-inline-start: $horizontal-spacing;
     }
   }
 
-  @mixin bottom-margin($selectors, $vertical-gap) {
+  @mixin bottom-margin($selectors, $vertical-spacing) {
     #{$selectors} {
       &:not(:last-child) {
-        margin-bottom: $vertical-gap;
+        margin-bottom: $vertical-spacing;
       }
     }
   }
 
-  @mixin apply-uniform-vertical-spacing($vertical-gap) {
+  @mixin apply-uniform-vertical-spacing($base-vertical-spacing) {
     /* Reset default top/bottom margins added by browser. */
     @include no-margin('p');
     @include no-margin('h1, h2, h3, h4, h5, h6');
     @include no-margin('blockquote');
+    @include no-margin('pre');
 
     /* Add spacing between elements using `margin-bottom` only (bottom-out instead of top-down strategy). */
-    $small-gap: math.div($vertical-gap, 2);
-    @include bottom-margin('p', $vertical-gap);
-    @include bottom-margin('h1, h2, h3, h4, h5, h6', $vertical-gap);
-    @include bottom-margin('ul, ol', $vertical-gap);
-    @include bottom-margin('li', $small-gap);
-    @include bottom-margin('table', $vertical-gap);
-    @include bottom-margin('blockquote', $vertical-gap);
+    $small-vertical-spacing: math.div($base-vertical-spacing, 2);
+    @include bottom-margin('p', $base-vertical-spacing);
+    @include bottom-margin('h1, h2, h3, h4, h5, h6', $base-vertical-spacing);
+    @include bottom-margin('ul, ol', $base-vertical-spacing);
+    @include bottom-margin('li', $small-vertical-spacing);
+    @include bottom-margin('table', $base-vertical-spacing);
+    @include bottom-margin('blockquote', $base-vertical-spacing);
+    @include bottom-margin('pre', $base-vertical-spacing);
   }
 
-  @mixin apply-uniform-horizontal-spacing($horizontal-gap) {
+  @mixin apply-uniform-horizontal-spacing($base-horizontal-spacing) {
     /* Reset default left/right paddings added by browser. */
     @include no-padding('ul, ol');
 
     /* Add spacing for list items. */
-    $list-spacing: $horizontal-gap * 2;
-    @include left-padding('ul, ol', $list-spacing);
+    $large-horizontal-spacing: $base-horizontal-spacing * 2;
+    @include left-padding('ul, ol', $large-horizontal-spacing);
   }
 
-  @include apply-uniform-vertical-spacing($text-size);
-  @include apply-uniform-horizontal-spacing($text-size);
+  @include apply-uniform-vertical-spacing($base-spacing);
+  @include apply-uniform-horizontal-spacing($base-spacing);
 
   ul {
     /*
@@ -167,7 +199,7 @@ $text-size: 0.75em; // Lower looks bad on Firefox
   }
 
   blockquote {
-    padding: 0 1em;
+    padding: 0 $base-spacing;
     border-left: .25em solid $color-primary;
   }
 }