Use lint from AGP 8.8.1

[wzieba]

Closes: AINFRA-654

Description

This PR fixes failing lint. The problem is the combination of androidx.lifecycle:2.9.0 and AGP:8.7.3.

See: https://issuetracker.google.com/issues/418014548

It goes as follows:

• ✅ Hotfix: revert to AGP 8.7.3 #21919 passed as it was based on an older trunk: lifecycle:2.8.7 + AGP:8.7.3

• ✅ e.g. a306dba trunk just before AGP downgrade passed: lifecycle:2.9.0 + AGP:8.8.1

• ❌ f9eb16a current trunk after merging AGP downgrade: lifecycle:2.9.0 + AGP:8.7.3

---

I propose the solution of temporary upgrading Lint version to 8.8.1, while leaving the rest of the AGP in 8.7.3 for reasons described in #21919

[wzieba]

@nbradbury Can I ask you to test that language settings still work? The Lint version should not affect the production code, but still just in case 🙏

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud

[adalpari]

Language settings work for me :)

[ParaskP7]

As long as CI passed on this, it is a ✅ from my side, thanks for this Lint "fix" @wzieba ! 🚀

PS: @nbradbury , it would indeed be prudent to test this change before merging.

---

FYI: An alternative would be to keep AGP + Lint on the same version, but (temporarily) disabling NullSafeMutableLiveData on libs:editor, libs:image-editor and WordPress modules, and then, reverting that after bumping AGP to 8.8.1 or higher. Not to 100% sure which is best, but it does seems that using Lint from 8.8.1 could be safe enough... 🤞

[wpmobilebot]

📲 You can test the changes from this Pull Request in WordPress by scanning the QR code below to install the corresponding build.

	App Name	WordPress
	Flavor	Jalapeno
	Build Type	Debug
	Version	pr21925-f6f8e43
	Commit	f6f8e43
	Direct Download	wordpress-prototype-build-pr21925-f6f8e43.apk

Note: Google Login is not supported on these builds.

[wpmobilebot]

📲 You can test the changes from this Pull Request in Jetpack by scanning the QR code below to install the corresponding build.

	App Name	Jetpack
	Flavor	Jalapeno
	Build Type	Debug
	Version	pr21925-f6f8e43
	Commit	f6f8e43
	Direct Download	jetpack-prototype-build-pr21925-f6f8e43.apk

Note: Google Login is not supported on these builds.

[nbradbury]

Can I ask you to test that language settings still work?

@wzieba I verified that the language settings still work in this branch.