"JSON_VALIDATION_ERROR_DEBUG_VIEW " error is displayed on the "deletion_request" ping

[abodea]

Steps to reproduce

1. Start app
2. Disable data upload
3. Force stop app
4. Start app
5. Trigger Glean Debug Activity uploads: adb shell am start -n org.mozilla.tv.firefox/mozilla.telemetry.glean.debug.GleanDebugActivity --es tagPings connect
6. Enable data upload
7. Restart FF and launch it again.
8. Disable data upload

Expected behavior

Deletion_request ping is displayed without errors.

Actual behavior

"JSON_VALIDATION_ERROR_DEBUG_VIEW " error is displayed on the "deletion_request" ping

Device information

• Fire TV device: Fire Stick.
• Latest affected Firefox version: 4.7.1
• Earliest affected Firefox version: 4.7.1
• Turbo Mode: On and Off.
• Glean Dashboard

deletion_request | JSON_VALIDATION_ERROR_DEBUG_VIEW [{"keyword": "required", "dataPath": ".client_info", "schemaPath": "#/properties/client_info/required", "params":{"missingProperty": "app_build"},"message": "should have required property 'app_build'"}]
-- | --

{
"client_info": {
"client_id": "9d50ef2c-3e4b-4be8-b231-8c58df5c27b4",
"first_run_date": "2020-07-16+03:00",
"telemetry_sdk_build": "21.3.0"
},
"metrics": {
"uuid": {
"legacy.ids.client_id": "fe24b3c3-e210-41f8-abdf-0d7d4f5c921d"
}
},
"ping_info": {
"end_time": "2020-07-16T15:33+03:00",
"ping_type": "deletion_request",
"seq": 0,
"start_time": "2020-07-16T13:20+03:00"
}
}

[Dexterp37]

Note that this is probably already fixed by a recent version of Glean. Specifically, this was fixed in 31.2.0 by mozilla/glean#996