Hotfix to support Intrinsic model type in modelUtils

[kazrael2119]

fixes https://dev.azure.com/azure-sdk/public/public%20Team/_build/results?buildId=5769056&view=logs&j=83516c17-6666-5250-abde-63983ce72a49&t=00be4b52-4a63-5865-8e02-c61723ad0692&l=350

07:26:32.433 cmderr 	[automation_generate.sh] <unknown location>:1:1 - error @azure-tools/typespec-ts/invalid-schema: Couldn't get schema for type Intrinsic with property body
07:26:32.433 cmderr 	[automation_generate.sh] <unknown location>:1:1 - error @azure-tools/typespec-ts/invalid-schema: Couldn't get schema for type Intrinsic with property resource
07:26:32.434 cmderr 	[automation_generate.sh] <unknown location>:1:1 - error @azure-tools/typespec-ts/invalid-schema: Couldn't get schema for type Intrinsic with property body
07:26:32.434 cmderr 	[automation_generate.sh] <unknown location>:1:1 - error @azure-tools/typespec-ts/invalid-schema: Couldn't get schema for type Intrinsic with property body
07:26:32.434 cmderr 	[automation_generate.sh] <unknown location>:1:1 - error @azure-tools/typespec-ts/invalid-schema: Couldn't get schema for type Intrinsic with property body
07:26:32.434 cmderr 	[automation_generate.sh] <unknown location>:1:1 - error @azure-tools/typespec-ts/invalid-schema: Couldn't get schema for type Intrinsic with property body
07:26:32.434 cmderr 	[automation_generate.sh] <unknown location>:1:1 - error @azure-tools/typespec-ts/invalid-schema: Couldn't get schema for type Intrinsic with property body
07:26:32.434 cmderr 	[automation_generate.sh] <unknown location>:1:1 - error @azure-tools/typespec-ts/invalid-schema: Couldn't get schema for type Intrinsic with property body
07:26:32.434 cmderr 	[automation_generate.sh] <unknown location>:1:1 - error @azure-tools/typespec-ts/invalid-schema: Couldn't get schema for type Intrinsic with property resource
07:26:32.434 cmderr 	[automation_generate.sh] <unknown location>:1:1 - error @azure-tools/typespec-ts/invalid-schema: Couldn't get schema for type Intrinsic with property body
07:26:32.434 cmderr 	[automation_generate.sh] <unknown location>:1:1 - error @azure-tools/typespec-ts/invalid-schema: Couldn't get schema for type Intrinsic with property body
07:26:32.434 cmderr 	[automation_generate.sh] <unknown location>:1:1 - error @azure-tools/typespec-ts/invalid-schema: Couldn't get schema for type Intrinsic with property body
07:26:32.435 cmderr 	[automation_generate.sh] <unknown location>:1:1 - error @azure-tools/typespec-ts/invalid-schema: Couldn't get schema for type Intrinsic with property body
07:26:32.435 cmderr 	[automation_generate.sh] <unknown location>:1:1 - error @azure-tools/typespec-ts/invalid-schema: Couldn't get schema for type Intrinsic with property body

to unblock typespec migration