feat: Android Distro vs Sdk OpenTelemetry naming

[abelonogov-ld]

Summary

Introduces distroAttributes on both iOS and Android Observability plugin classes, enabling MAUI (and other wrappers) to override telemetry.distro.name and telemetry.distro.version while preserving a constant telemetry.sdk.name that always identifies the underlying native SDK.

Motivation

• telemetry.sdk.name should always reflect the native SDK name and remain constant
• telemetry.distro.name/version should be overridable by wrappers (e.g. MAUI sets "observability-maui-ios" / "observability-maui-android")
• The identify GraphQL request was receiving empty resource attributes on Android because it read from options.resourceAttributes (user-provided, defaults to empty) instead of the fully-built OTel resource

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Note

Medium Risk
Changes how OpenTelemetry Resource attributes are constructed and propagated into session replay identify payloads, which can affect downstream telemetry labeling and ingestion. No auth/data model changes, but mislabeling or attribute loss could impact observability and tests.

Overview
Updates the Android observability plugin to follow the OpenTelemetry SDK vs distro naming pattern by adding telemetry.distro.name/telemetry.distro.version attributes and avoiding overwriting service.name when building the Resource.

Propagates the final built Resource attributes into LDObserve.context and updates session replay identify events to use these computed attributes (rather than raw options.resourceAttributes), with IdentifyItemPayload refactored to reuse a shared attribute-flattening helper. E2E app code is adjusted to exercise nested span logging/metrics and to tweak example resource attributes.

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