refactor: Migrate to PointerEvents (#6598)

* refactor: Remove checks for PointerEvent support.

* refactor: Deprecate and remove calls to splitEventByTouches.

* refactor: Deprecate and remove calls to setClientFromTouch().

* refactor: Use PointerEvent in place of Event/MouseEvent/TouchEvent/PseudoEvent.

* refactor: Update references to mouse/touch events in code and documentation to reference pointer events.

* refactor: Merge Gesture and TouchGesture

* chore: clang-format changed files

* refactor: Bind and expect PointerEvents instead of MouseEvents.

* refactor: Rename TouchGesture to Gesture.

* fix: Fix test failures.

* chore: clang-format changed files.

* fix: Fix errant _ from merging

* refactor: Clean up dead code in browser_events.ts.

* chore: Update version in deprecation notices to reflect release schedule

* fix: Fixed a bug that caused the browser context menu to not be suppressed in Chrome.

* fix: Re-export Gesture as TouchGesture for backwards compatibility.

* refactor: Deprecate and remove uses of opt_noPreventDefault.

* chore: Fix error message in gesture.ts.

* chore: Removed obsolete todo.

core/blockly.ts

@@ -145,7 +145,6 @@ import {Toolbox} from './toolbox/toolbox.js';
 import {ToolboxItem} from './toolbox/toolbox_item.js';
 import * as Tooltip from './tooltip.js';
 import * as Touch from './touch.js';
-import {TouchGesture} from './touch_gesture.js';
 import {Trashcan} from './trashcan.js';
 import * as utils from './utils.js';
 import * as colour from './utils/colour.js';
@@ -485,9 +484,7 @@ export function unbindEvent_(bindData: browserEvents.Data): Function {
  * @param opt_noCaptureIdentifier True if triggering on this event should not
  *     block execution of other event handlers on this touch or other
  *     simultaneous touches.  False by default.
- * @param opt_noPreventDefault True if triggering on this event should prevent
- *     the default handler.  False by default.  If opt_noPreventDefault is
- *     provided, opt_noCaptureIdentifier must also be provided.
+ * @param _opt_noPreventDefault No-op, deprecated and will be removed in v10.
  * @returns Opaque data that can be passed to unbindEvent_.
  * @deprecated Use **Blockly.browserEvents.conditionalBind** instead.
  * @see browserEvents.conditionalBind
@@ -496,13 +493,12 @@ export function unbindEvent_(bindData: browserEvents.Data): Function {
 export function bindEventWithChecks_(
     node: EventTarget, name: string, thisObject: Object|null, func: Function,
     opt_noCaptureIdentifier?: boolean,
-    opt_noPreventDefault?: boolean): browserEvents.Data {
+    _opt_noPreventDefault?: boolean): browserEvents.Data {
   deprecation.warn(
       'Blockly.bindEventWithChecks_', 'December 2021', 'December 2022',
       'Blockly.browserEvents.conditionalBind');
   return browserEvents.conditionalBind(
-      node, name, thisObject, func, opt_noCaptureIdentifier,
-      opt_noPreventDefault);
+      node, name, thisObject, func, opt_noCaptureIdentifier);
 }
 
 // Aliases to allow external code to access these values for legacy reasons.
@@ -671,6 +667,7 @@ export {FlyoutMetricsManager};
 export {CodeGenerator};
 export {CodeGenerator as Generator};  // Deprecated name, October 2022.
 export {Gesture};
+export {Gesture as TouchGesture};  // Remove in v10.
 export {Grid};
 export {HorizontalFlyout};
 export {IASTNodeLocation};
@@ -723,7 +720,6 @@ export {Toolbox};
 export {ToolboxCategory};
 export {ToolboxItem};
 export {ToolboxSeparator};
-export {TouchGesture};
 export {Trashcan};
 export {VariableMap};
 export {VariableModel};