feat: bump eslint & oxlint (#14452)

#### PR Dependency Tree


* **PR #14452** 👈

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**
* Improved null-safety, dependency tracking, upload validation, and
error logging for more reliable uploads, clipboard, calendar linking,
telemetry, PDF/theme printing, and preview/zoom behavior.
* Tightened handling of all-day calendar events (missing date now
reported).

* **Deprecations**
  * Removed deprecated RadioButton and RadioButtonGroup; use RadioGroup.

* **Chores**
* Unified and upgraded linting/config, reorganized imports, and
standardized binary handling for more consistent builds and tooling.
<!-- end of auto-generated comment: release notes by coderabbit.ai -->

packages/common/nbstore/src/telemetry/manager.ts

@@ -125,8 +125,8 @@ export class TelemetryManager {
 
   private mergeContext(event: TelemetryEvent): TelemetryEvent {
     const mergedUserProps = {
-      ...(this.context.userProperties ?? {}),
-      ...(event.userProperties ?? {}),
+      ...this.context.userProperties,
+      ...event.userProperties,
     };
 
     const mergedContext = {