[Android] Bump NDK version to 28.2.13676358

[anikiki]

Task/Issue URL: https://app.asana.com/1/137249556945/project/1200905986587319/task/1214687607254026?focus=true

Description

Update NDK version to 28.2.13676358 in build.gradle files.

Steps to test this PR

• Test http -> https upgrade
• Test crash / anr

NO UI changes

---

Note

Medium Risk
Build/toolchain-only change, but upgrading the NDK can affect native compilation and runtime behavior in the ANR and HTTPS upgrade native components, potentially surfacing new build or crash issues across CI/dev environments.

Overview
Updates the Android NDK version from 21.4.7075529 to 28.2.13676358 for native builds in the anrs-impl and httpsupgrade-impl modules.

Adjusts the tooling install script (install_tools.sh) to download the same newer NDK via sdkmanager, keeping local/CI toolchains in sync.

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[anikiki]

• [Android] Bump NDK version to 28.2.13676358 #8536 👈 (View in Graphite)
• develop

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[cursor]

Cursor Bugbot has reviewed your changes and found 1 potential issue.

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