fix(skit): add missing oneshot + plugin allowlist checks to batch API #1071

Job	Run time
E2E / Playwright E2E	17m 8s
Skit / Build	10m 15s
Skit / Test (GPU)	1m 47s
Skit / Lint (fmt + clippy)	3m 24s
UI / Build	13s
Skit / Test	8m 3s
Plugins / Lint (Sherpa-ONNX Plugins)	1m 8s
Plugins / Lint (Simple Plugins)	43s
Plugins / Format Check	18s
UI / Lint (TypeScript + ESLint)	38s
Plugins / Lint (Whisper)	41s
UI / Test	24s
UI / Knip (unused code)	20s
Plugins / Lint (NLLB)	2m 14s
All Checks Passed	3s
	47m 19s

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