docs: clarify DiD predict support contract #2601

Job	Run time
Pure Python Fallback	1h 11m 9s
Rust Unit Tests (ubuntu-24.04-arm)	1m 30s
Rust Unit Tests (windows-latest)	2m 24s
Rust Unit Tests (macos-latest)	1m 31s
Rust Unit Tests (ubuntu-latest)	1m 15s
Python Tests (ubuntu-latest, py3.13)	1h 4m 56s
Python Tests (ubuntu-latest, py3.14)	1h 5m 5s
Python Tests (ubuntu-latest, py3.11)	1h 7m 5s
Python Tests (macos-latest, py3.13)	36m 48s
Python Tests (macos-latest, py3.14)	31m 44s
Python Tests (windows-latest, py3.11)	55m 5s
Python Tests (windows-latest, py3.13)	1h 1m 49s
Python Tests (windows-latest, py3.14)	1h 2m 20s
Python Tests (ubuntu-24.04-arm, py3.11)	40m 37s
Python Tests (macos-latest, py3.11)	32m 15s
Python Tests (ubuntu-24.04-arm, py3.14)	37m 2s
Python Tests (ubuntu-24.04-arm, py3.13)	36m 30s
	11h 9m 5s

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