Fix: Android react.gradle VmCleanup when packaging as library

[nickfujita]

Summary

When packaging a react app as an android library with the enableVmCleanup flag not set to false, an error occurs since the "package${targetName}" task can not be found. This PR adds a simple null check, similar to what is being done for the sTask and mTask just below it to prevent the error.

Changelog

[Android] [Fixed] - Fixes android build error when compiling as library

Test Plan

Compile project as library (com.android.library), and should not trigger and error with these changes.

Would also like to have this fix cherry-pick'd to release 0.67 after merging.

[pull-bot]

Messages

📖

📋 Verify Changelog Format - A changelog entry has the following format: [CATEGORY] [TYPE] - Message. Details CATEGORY may be: General iOS Android JavaScript Internal (for changes that do not need to be called out in the release notes) TYPE may be: Added, for new features. Changed, for changes in existing functionality. Deprecated, for soon-to-be removed features. Removed, for now removed features. Fixed, for any bug fixes. Security, in case of vulnerabilities. MESSAGE may answer "what and why" on a feature level. Use this to briefly tell React Native users about notable changes.

Generated by 🚫 dangerJS against f9304fe

[analysis-bot]

Platform	Engine	Arch	Size (bytes)	Diff
ios	-	universal	n/a	--

Base commit: 8d50bf1
Branch: main

[analysis-bot]

Platform	Engine	Arch	Size (bytes)	Diff
android	hermes	arm64-v8a	8,187,513	-15,683
android	hermes	armeabi-v7a	7,789,009	-21,241
android	hermes	x86	8,557,689	-17,678
android	hermes	x86_64	8,510,330	-15,646
android	jsc	arm64-v8a	9,856,467	-15,475
android	jsc	armeabi-v7a	8,842,518	-21,018
android	jsc	x86	9,822,742	-17,461
android	jsc	x86_64	10,419,500	-15,430

Base commit: 8d50bf1
Branch: main

[facebook-github-bot]

@cortinico has imported this pull request. If you are a Meta employee, you can view this diff on Phabricator.

[react-native-bot]

This pull request was successfully merged by @nickfujita in c34ef58.

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