[build] Add native_target/crashpad_handler target

[isarkis]

native_target/crashpad_handler target needed for EG YTS Updater Tests

Bug: 520434168

[github-actions]

🤖 Gemini Suggested Commit Message

---

build: Add crashpad_handler to Evergreen targets

Add the native_target/crashpad_handler GN target to the build
configurations for arm-hardfp-raspi and arm-hardfp-rdk. This target
is required for the Evergreen YTS Updater Tests on these platforms.

Bug: 520434168

---

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[gemini-code-assist]

Code Review

This pull request adds the "native_target/crashpad_handler" target to the Evergreen ARM hardfp configurations for Raspberry Pi and RDK, updating both the GitHub action configurations and the Kokoro build GCL files. There are no review comments, and I have no feedback to provide.