RUMS-5996: Fix ANR in old-arch SR text mapper

[jonathanmos]

What does this PR do?

Fixes an ANR on Android on the React Native old architecture caused by the Session Replay text mapper blocking the UI thread on every TextView in a snapshot.

Root cause: LegacyTextViewUtils fetched RN text properties (font family, size, color) by posting a runnable to mqt_native_modules and synchronously blocking the UI thread on a CountDownLatch for up to 5 seconds via ShadowNodeWrapper.getShadowNodeWrapper. If mqt_native_modules was busy (e.g. mid-UIManagerModule.onBatchComplete / Yoga layout — the very batch whose redraw triggered the snapshot), the posted runnable queued behind that work and the UI thread waited. With even a handful of TextViews on screen, the cumulative wait exceeded the 5-second input-dispatch deadline and the system fired an ANR.

Fix: Removed ShadowNodeWrapper entirely from the old-arch text mapper. All three text properties are now read directly off the TextView, matching what FabricTextViewUtils already does:

Font size: view.textSize (unchanged, was already correct)
Text color: read from ForegroundColorSpan on the view's Spanned text (RN old arch encodes color as a span, not via TextView.setTextColor())
Font family: read from CustomStyleSpan via Class.forName + reflection (RN old arch applies font family to TextPaint at draw time via this span, never via TextView.setTypeface())
FabricTextViewUtils (new architecture) is not affected — it already reads directly from the TextView with no cross-thread calls.

Motivation

What inspired you to submit this pull request?

Additional Notes

Anything else we should know when reviewing?

Review checklist (to be filled by reviewers)

• Feature or bugfix MUST have appropriate tests
• Make sure you discussed the feature or bugfix with the maintaining team in an Issue
• Make sure each commit and the PR mention the Issue number (cf the CONTRIBUTING doc)
• If this PR is auto-generated, please make sure also to manually update the code related to the change

[Copilot]

Pull request overview

This PR addresses an ANR in React Native old architecture Session Replay text mapping by removing the UI-thread-blocking shadow node resolution path and instead deriving text styling directly from the TextView (via Spanned spans and typeface fallback), aligning behavior more closely with the existing Fabric/new-arch mapper.

Changes:

• Removed ShadowNodeWrapper (and related reflection/UIManager shadow-node access) from the legacy text mapper to avoid blocking the UI thread.
• Updated LegacyTextViewUtils to resolve font family (via CustomStyleSpan reflection), font size (via AbsoluteSizeSpan / TextView.textSize), and text color (via ForegroundColorSpan) directly from the TextView.
• Refactored and expanded JVM tests to validate the new span/typeface-based resolution behavior.

Reviewed changes

Copilot reviewed 4 out of 4 changed files in this pull request and generated 3 comments.

File	Description
packages/react-native-session-replay/android/src/test/kotlin/com/datadog/reactnative/sessionreplay/utils/text/TextViewUtilsTest.kt	Updates tests to cover span/typeface-based style resolution and removes shadow-node based setup.
packages/react-native-session-replay/android/src/main/kotlin/com/datadog/reactnative/sessionreplay/utils/text/TextViewUtils.kt	Removes legacy ReflectionUtils dependency and updates factory creation for legacy implementation.
packages/react-native-session-replay/android/src/main/kotlin/com/datadog/reactnative/sessionreplay/utils/text/LegacyTextViewUtils.kt	Replaces shadow-node lookups with direct TextView/Spanned inspection and reflection on CustomStyleSpan.
packages/react-native-session-replay/android/src/main/kotlin/com/datadog/reactnative/sessionreplay/ShadowNodeWrapper.kt	Deletes the blocking shadow-node wrapper implementation.

---

💡 Add Copilot custom instructions for smarter, more guided reviews. Learn how to get started.