Mark IIFE signature with anySignature during contextual typing#8698
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Avoids recursion -- during batch compilation, `checkCallExpression` already sets the signature to `anySignature` as a sentinel value, the services layer calls directly into `checkParameter`, skipping `checkCallExpression` entirely. So `getContextuallyTypedParameterType` also needs to set this sentinel value.
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Fixes #8661
Avoids recursion -- during batch compilation,
checkCallExpressionalready sets the signature toanySignatureas a sentinel value, the services layer calls directly intocheckParameter, skippingcheckCallExpressionentirely. SogetContextuallyTypedParameterTypealso needs to set thissentinel value.