Don't show recommendations for services not supported in a region

[awschristou]

Is your feature request related to a problem? Please describe.

I tried to publish my application to App Runner in Canada (Central), and got the following failure (below). The root cause was that App Runner is not available in this region.

MyAspNetCoreApp: deploying...
MyAspNetCoreApp: creating CloudFormation changeset...

 ❌  MyAspNetCoreApp failed: Error [ValidationError]: Template format error: Unrecognized resource types: [AWS::AppRunner::Service]
    at Request.extractError (C:\Users\xxxxx\.aws-dotnet-deploy\node_modules\aws-cdk\node_modules\aws-sdk\lib\protocol\query.js:50:29)
    at Request.callListeners (C:\Users\xxxxx\.aws-dotnet-deploy\node_modules\aws-cdk\node_modules\aws-sdk\lib\sequential_executor.js:106:20)
    at Request.emit (C:\Users\xxxxx\.aws-dotnet-deploy\node_modules\aws-cdk\node_modules\aws-sdk\lib\sequential_executor.js:78:10)
    at Request.emit (C:\Users\xxxxx\.aws-dotnet-deploy\node_modules\aws-cdk\node_modules\aws-sdk\lib\request.js:688:14)
    at Request.transition (C:\Users\xxxxx\.aws-dotnet-deploy\node_modules\aws-cdk\node_modules\aws-sdk\lib\request.js:22:10)
    at AcceptorStateMachine.runTo (C:\Users\xxxxx\.aws-dotnet-deploy\node_modules\aws-cdk\node_modules\aws-sdk\lib\state_machine.js:14:12)
    at C:\Users\xxxxx\.aws-dotnet-deploy\node_modules\aws-cdk\node_modules\aws-sdk\lib\state_machine.js:26:10
    at Request.<anonymous> (C:\Users\xxxxx\.aws-dotnet-deploy\node_modules\aws-cdk\node_modules\aws-sdk\lib\request.js:38:9)
    at Request.<anonymous> (C:\Users\xxxxx\.aws-dotnet-deploy\node_modules\aws-cdk\node_modules\aws-sdk\lib\request.js:690:12)
    at Request.callListeners (C:\Users\xxxxx\.aws-dotnet-deploy\node_modules\aws-cdk\node_modules\aws-sdk\lib\sequential_executor.js:116:18) {
  code: 'ValidationError',
  time: 2022-03-04T00:43:56.128Z,
  requestId: '0a23f070-a4e7-418d-9e3c-107391d9d483',
  statusCode: 400,
  retryable: false,
  retryDelay: 832.9546585670413
}
Template format error: Unrecognized resource types: [AWS::AppRunner::Service]

Describe the solution you'd like

I should not see recommendations for services that are not available in the region I am trying to deploy to.

Additional context

• Deploy CLI version 0.34.5

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This is a :rocket: feature request