fix(editor): editor behavior and styles (#14498)

fix #14269 
fix #13920
fix #13977
fix #13953
fix #13895
fix #13905
fix #14136
fix #14357
fix #14491

#### PR Dependency Tree


* **PR #14498** 👈

This tree was auto-generated by
[Charcoal](https://github.com/danerwilliams/charcoal)

<!-- This is an auto-generated comment: release notes by coderabbit.ai
-->
## Summary by CodeRabbit

* **Bug Fixes**
  * Callout and toolbar defaults now reliably show grey backgrounds
  * Keyboard shortcuts behave better across layouts and non-ASCII input
  * Deleted workspaces no longer appear in local listings

* **New Features**
  * Cell editing now respects pre-entry validation hooks
* Scrollbars use themeable variables and include Chromium compatibility
fixes

* **Style**
  * Minor UI color adjustment for hidden properties

* **Tests**
  * Added unit tests for table column handling and keymap behavior
<!-- end of auto-generated comment: release notes by coderabbit.ai -->

blocksuite/framework/std/src/__tests__/keymap.unit.spec.ts

@@ -0,0 +1,119 @@
+import { describe, expect, test } from 'vitest';
+
+import { bindKeymap } from '../event/keymap.js';
+
+const createKeyboardEvent = (options: {
+  key: string;
+  keyCode: number;
+  altKey?: boolean;
+  ctrlKey?: boolean;
+  metaKey?: boolean;
+  shiftKey?: boolean;
+}): KeyboardEvent => {
+  const event = new KeyboardEvent('keydown', {
+    key: options.key,
+    altKey: options.altKey ?? false,
+    ctrlKey: options.ctrlKey ?? false,
+    metaKey: options.metaKey ?? false,
+    shiftKey: options.shiftKey ?? false,
+  });
+
+  Object.defineProperty(event, 'keyCode', {
+    configurable: true,
+    get: () => options.keyCode,
+  });
+  Object.defineProperty(event, 'which', {
+    configurable: true,
+    get: () => options.keyCode,
+  });
+
+  return event;
+};
+
+const createCtx = (event: KeyboardEvent) => {
+  return {
+    get(name: string) {
+      if (name === 'keyboardState') {
+        return { raw: event };
+      }
+      return undefined;
+    },
+  } as any;
+};
+
+describe('bindKeymap', () => {
+  test('falls back to physical key for ctrl shortcuts on non-US layouts', () => {
+    let handled = false;
+    const handler = bindKeymap({
+      'Ctrl-f': () => {
+        handled = true;
+        return true;
+      },
+    });
+
+    const event = createKeyboardEvent({
+      key: 'а',
+      keyCode: 70,
+      ctrlKey: true,
+    });
+
+    expect(handler(createCtx(event))).toBe(true);
+    expect(handled).toBe(true);
+  });
+
+  test('does not fallback for Alt+locale-character letter input', () => {
+    let handled = false;
+    const handler = bindKeymap({
+      'Alt-s': () => {
+        handled = true;
+        return true;
+      },
+    });
+
+    const event = createKeyboardEvent({
+      key: 'ś',
+      keyCode: 83,
+      altKey: true,
+    });
+
+    expect(handler(createCtx(event))).toBe(false);
+    expect(handled).toBe(false);
+  });
+
+  test('keeps Alt+digit fallback for non-ASCII key outputs', () => {
+    let handled = false;
+    const handler = bindKeymap({
+      'Alt-0': () => {
+        handled = true;
+        return true;
+      },
+    });
+
+    const event = createKeyboardEvent({
+      key: 'º',
+      keyCode: 48,
+      altKey: true,
+    });
+
+    expect(handler(createCtx(event))).toBe(true);
+    expect(handled).toBe(true);
+  });
+
+  test('does not fallback on non-ASCII input without modifiers', () => {
+    let handled = false;
+    const handler = bindKeymap({
+      '[': () => {
+        handled = true;
+        return true;
+      },
+    });
+
+    const event = createKeyboardEvent({
+      key: 'х',
+      keyCode: 219,
+    });
+
+    expect(handler(createCtx(event))).toBe(false);
+    expect(handled).toBe(false);
+  });
+});