Add toc analytics, add condition analytics track

[dvortsovs]

Analytics for clicks on Table of Contents (TOC) items and conditional event tracking

Description

This PR adds analytics tracking for clicks on Table of Contents (TOC) items and extends the analytics system with the ability to conditionally send events to specific adapters.

What has changed

Analytics in the TocItem component

• The TocItem component now accepts the analyticsEvents prop (type AnalyticsEventsProp from @gravity-ui/page-constructor), allowing analytics events to be configured externally.
• When a TOC item is clicked, the DOCS_TOC_ITEM_CLICK event is sent via the useAnalytics hook from @gravity-ui/page-constructor.
• Analytics now works correctly for all interaction scenarios:
  • clicking a link
  • expanding/collapsing nested items
  • clicking items without an href

Conditional event tracking

• The Analytics.track() method now includes an optional options: AnalyticsTrackOptions parameter, which allows filtering adapters when sending events:
  • includeKeys — send the event only to adapters with the specified keys
  • excludeKeys — exclude adapters with the specified keys from receiving the event
• The AnalyticsAdapter interface now includes an optional key field, allowing adapters to be identified.
• The YandexMetrikaAdapter now supports the key field in its configuration (by default, the string representation of the counter ID is used).

[yc-ui-bot]

Visual Tests Report is ready.