fix(skit): add missing oneshot + plugin allowlist checks to batch API #1075

Job	Run time
Skit / Lint (fmt + clippy)	1m 49s
Plugins / Lint (Simple Plugins)	58s
UI / Knip (unused code)	17s
Skit / Test (GPU)	1m 50s
UI / Build	15s
Plugins / Lint (Sherpa-ONNX Plugins)	55s
Skit / Test	7m 44s
Plugins / Lint (NLLB)	2m 12s
UI / Lint (TypeScript + ESLint)	35s
UI / Test	30s
E2E / Playwright E2E	16m 22s
Plugins / Format Check	19s
Skit / Build	10m 52s
Plugins / Lint (Whisper)	51s
All Checks Passed	0s
	45m 29s

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